Fix nightly sweep

[Gnoale]

fixes https://github.com/scaleway/terraform-provider-scaleway/actions/runs/14698141826/job/41244881374

When the -sweep flag is passed, the sweep function are ran by the Terraform SDK, and the edgeservices one are using a wrong method to instantiate the client which cause a panic

panic: interface conversion: interface {} is *scw.Client, not *meta.Meta

goroutine 1 [running]:
github.com/scaleway/terraform-provider-scaleway/v2/internal/meta.ExtractScwClient(...)
	/home/runner/work/terraform-provider-scaleway/terraform-provider-scaleway/internal/meta/extractors.go:97
github.com/scaleway/terraform-provider-scaleway/v2/internal/services/edgeservices.NewEdgeServicesAPI(...)
	/home/runner/work/terraform-provider-scaleway/terraform-provider-scaleway/internal/services/edgeservices/helpers.go:12
github.com/scaleway/terraform-provider-scaleway/v2/internal/services/edgeservices/testfuncs.testSweepRoute.func1(0x1c7b728?)
	/home/runner/work/terraform-provider-scaleway/terraform-provider-scaleway/internal/services/edgeservices/testfuncs/sweep.go:204 +0x2a
github.com/scaleway/terraform-provider-scaleway/v2/internal/acctest.Sweep(0x1a5cc48)
	/home/runner/work/terraform-provider-scaleway/terraform-provider-scaleway/internal/acctest/sweepers.go:21 +0x8f
github.com/scaleway/terraform-provider-scaleway/v2/internal/services/edgeservices/testfuncs.testSweepRoute({0xc0000bc300?, 0x0?})
	/home/runner/work/terraform-provider-scaleway/terraform-provider-scaleway/internal/services/edgeservices/testfuncs/sweep.go:203 +0x1a
github.com/hashicorp/terraform-plugin-sdk/v2/helper/resource.runSweeperWithRegion({0x7ffe1b836aa2, 0xb}, 0xc0003655f0, 0xc000365200, 0xc000365680, 0x0)
	/home/runner/go/pkg/mod/github.com/hashicorp/terraform-plugin-sdk/[email protected]/helper/resource/testing.go:267 +0x631
github.com/hashicorp/terraform-plugin-sdk/v2/helper/resource.runSweepers({0xc000337180, 0x1, 0xc000365200?}, 0xc000365200, 0x0)
	/home/runner/go/pkg/mod/github.com/hashicorp/terraform-plugin-sdk/[email protected]/helper/resource/testing.go:145 +0x5f2
github.com/hashicorp/terraform-plugin-sdk/v2/helper/resource.TestMain({0x1c64ba0, 0xc000396640})
	/home/runner/go/pkg/mod/github.com/hashicorp/terraform-plugin-sdk/[email protected]/helper/resource/testing.go:123 +0xe6
github.com/scaleway/terraform-provider-scaleway/v2/internal/services/edgeservices_test.TestMain(...)
	/home/runner/work/terraform-provider-scaleway/terraform-provider-scaleway/internal/services/edgeservices/sweep_test.go:15
main.main()
	_testmain.go:63 +0xb3
FAIL	github.com/scaleway/terraform-provider-scaleway/v2/internal/services/edgeservices	0.012s