Update Entity provider to only suggest on keys

[kddejong]

Issue #, if available:

Description of changes:

• Update Entity provider to only suggest on keys

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[Zee2413]

Approving in case EntityFieldCompletionProvider ends up being the best spot for the conditional check.

[kddejong]

Approving in case EntityFieldCompletionProvider ends up being the best spot for the conditional check.

I was able to update the atEntityKeyLevel to handle this. No changes to E2E tests and prevents weird autocomplete scenarios.

[github-actions]

Package	Line Rate	Branch Rate	Complexity	Health
ai	22%	80%	0	❌
ai.llm	53%	80%	0	❌
app	0%	0%	0	❌
artifacts	100%	100%	0	✔
auth	87%	92%	0	✔
autocomplete	93%	91%	0	✔
context	96%	96%	0	✔
context.semantic	98%	97%	0	✔
context.semantic.parameter	100%	95%	0	✔
context.syntaxtree	89%	90%	0	✔
context.syntaxtree.utils	86%	91%	0	✔
datastore	77%	97%	0	❌
definition	100%	100%	0	✔
document	93%	96%	0	✔
documentSymbol	93%	81%	0	✔
handlers	75%	88%	0	❌
hover	85%	86%	0	➖
protocol	96%	100%	0	✔
resourceState	76%	80%	0	❌
schema	88%	87%	0	✔
schema.transformers	85%	84%	0	➖
server	97%	96%	0	✔
services	67%	89%	0	❌
services.cfnLint	72%	91%	0	❌
services.guard	95%	79%	0	✔
services.guard.assets	81%	77%	0	➖
settings	97%	87%	0	✔
stacks	100%	100%	0	✔
telemetry	58%	78%	0	❌
templates	89%	85%	0	✔
utils	91%	92%	0	✔
Summary	86% (16993 / 19682)	89% (3524 / 3957)	0	✔

[github-actions]

Package	Line Rate	Branch Rate	Complexity	Health
ai	22%	80%	0	❌
ai.llm	53%	80%	0	❌
app	0%	0%	0	❌
artifacts	100%	100%	0	✔
auth	87%	92%	0	✔
autocomplete	93%	91%	0	✔
context	96%	96%	0	✔
context.semantic	98%	97%	0	✔
context.semantic.parameter	100%	95%	0	✔
context.syntaxtree	89%	90%	0	✔
context.syntaxtree.utils	86%	91%	0	✔
datastore	77%	97%	0	❌
definition	100%	100%	0	✔
document	93%	96%	0	✔
documentSymbol	93%	81%	0	✔
handlers	75%	88%	0	❌
hover	85%	86%	0	➖
protocol	96%	100%	0	✔
resourceState	76%	80%	0	❌
schema	88%	87%	0	✔
schema.transformers	87%	85%	0	✔
server	97%	96%	0	✔
services	67%	89%	0	❌
services.cfnLint	72%	91%	0	❌
services.guard	95%	79%	0	✔
services.guard.assets	81%	77%	0	➖
settings	97%	87%	0	✔
stacks	100%	100%	0	✔
telemetry	58%	78%	0	❌
templates	89%	85%	0	✔
utils	91%	92%	0	✔
Summary	86% (17086 / 19779)	89% (3542 / 3976)	0	✔