fix panic in LinodeMachine.DeleteCondition

[glennpratt]

panic: runtime error: index out of range [7] with length 7

github.com/linode/cluster-api-provider-linode/api/v1alpha2.(*LinodeMachine).DeleteCondition(...)
/workspace/api/v1alpha2/linodemachine_types.go:605

What this PR does / why we need it:

Fix this panic hit during Linode creation / launch:

"panic": "runtime error: index out of range [7] with length 7"

"panicGoValue": "runtime.boundsError{x:7, y:7, signed:true, code:0x0}"

goroutine 460 [running]:
k8s.io/apimachinery/pkg/util/runtime.logPanic({0x2eff728, 0xc001280e10}, {0x28a2aa0, 0xc0015a0c00})
	/go/pkg/mod/k8s.io/[email protected]/pkg/util/runtime/runtime.go:132 +0xbc
sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller[...]).Reconcile.func1()
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/internal/controller/controller.go:108 +0x112
panic({0x28a2aa0?, 0xc0015a0c00?})
	/usr/local/go/src/runtime/panic.go:792 +0x132
github.com/linode/cluster-api-provider-linode/api/v1alpha2.(*LinodeMachine).DeleteCondition(...)
	/workspace/api/v1alpha2/linodemachine_types.go:605
github.com/linode/cluster-api-provider-linode/internal/controller.resizeRootDisk({0x2eff798, 0xc000294bd0}, {{0x2f09548?, 0xc001281350?}, 0x4e61e0?}, 0xc0007a4d00, 0x5f86236)
	/workspace/internal/controller/linodemachine_controller_helpers.go:1382 +0xb77
github.com/linode/cluster-api-provider-linode/internal/controller.configureDisks({0x2eff798, 0xc000294bd0}, {{0x2f09548?, 0xc001281350?}, 0x17eada5?}, 0xc0007a4d00, 0x5f86236)
	/workspace/internal/controller/linodemachine_controller_helpers.go:1226 +0x85
github.com/linode/cluster-api-provider-linode/internal/controller.(*LinodeMachineReconciler).reconcilePreflightConfigure(0xc0002d6f80, {0x2eff798, 0xc000294bd0}, 0x5f86236, {{0x2f09548?, 0xc001281350?}, 0x0?}, 0xc0007a4d00)
	/workspace/internal/controller/linodemachine_controller.go:602 +0x87
github.com/linode/cluster-api-provider-linode/internal/controller.(*LinodeMachineReconciler).reconcileCreate(0xc0002d6f80, {0x2eff798, 0xc000294bd0}, {{0x2f09548?, 0xc001281350?}, 0xc232c667dd529a32?}, 0xc0007a4d00)
	/workspace/internal/controller/linodemachine_controller.go:315 +0x687
github.com/linode/cluster-api-provider-linode/internal/controller.(*LinodeMachineReconciler).reconcile(0xc0002d6f80, {0x2eff798, 0xc000294bd0}, {{0x2f09548?, 0xc001281350?}, 0xc000fdcf08?}, 0xc0007a4d00)
	/workspace/internal/controller/linodemachine_controller.go:254 +0x627
github.com/linode/cluster-api-provider-linode/internal/controller.(*LinodeMachineReconciler).Reconcile(0xc0002d6f80, {0x2eff728?, 0xc001280e40?}, {{{0xc0008c39c8?, 0xc0011f54c0?}, {0xc0008c3a58?, 0x17ee8a7?}}})
	/workspace/internal/controller/linodemachine_controller.go:173 +0x104c
github.com/linode/cluster-api-provider-linode/observability/wrappers/runtimereconciler.RuntimeReconcilerWithTracing.Reconcile({{0x2eccb80?, 0xc0002d6f80?}, 0x2bc0b68?}, {0x2eff728?, 0xc001280e10?}, {{{0xc0008c39c8?, 0x0?}, {0xc0008c3a58?, 0x2a67ef1?}}})
	/workspace/observability/wrappers/runtimereconciler/runtimereconciler.gen.go:60 +0x1b8
sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller[...]).Reconcile(0xc001280d80?, {0x2eff728?, 0xc001280e10?}, {{{0xc0008c39c8?, 0x0?}, {0xc0008c3a58?, 0x0?}}})
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/internal/controller/controller.go:119 +0xbf
sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller[...]).reconcileHandler(0x2f34040, {0x2eff760, 0xc000326cd0}, {{{0xc0008c39c8, 0x16}, {0xc0008c3a58, 0x18}}}, 0x0)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/internal/controller/controller.go:340 +0x3ad
sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller[...]).processNextWorkItem(0x2f34040, {0x2eff760, 0xc000326cd0})
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/internal/controller/controller.go:300 +0x21b
sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller[...]).Start.func2.1()
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/internal/controller/controller.go:202 +0x85
created by sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller[...]).Start.func2 in goroutine 171
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/internal/controller/controller.go:198 +0x28f

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

Special notes for your reviewer:

TODOs:

• squashed commits
• includes documentation
• adds unit tests
• adds or updates e2e tests

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 66.28%. Comparing base (46f4ab1) to head (17b07c8).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #925      +/-   ##
==========================================
+ Coverage   65.94%   66.28%   +0.33%     
==========================================
  Files          71       71              
  Lines        7958     7957       -1     
==========================================
+ Hits         5248     5274      +26     
+ Misses       2408     2381      -27     
  Partials      302      302              

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[AshleyDumaine]

LGTM, thanks 👍