fix(core): make get() throw for implicitly request-scoped trees

[JoeNutt]

Here’s a concise PR body you can paste:

Treat non-static dependency trees as scoped in get(); instruct consumers to use resolve().

Adds focused tests under NestApplicationContext spec to cover implicit request scope via enhancers.

Closes #15836.

PR Checklist

• The commit message follows our guidelines: https://github.com/nestjs/nest/blob/master/CONTRIBUTING.md
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Other... Please describe:

What is the current behavior?

Calling module.get on a class whose dependency tree is implicitly non-static (e.g., due to a request‑scoped pipe/guard) returns a prototype-only instance with undefined injections, rather than throwing. Users don’t get guidance to use resolve().
Issue Number: #15836

What is the new behavior?

module.get now throws InvalidClassScopeException for non-static dependency trees (implicit request scope), instructing users to use resolve(). module.resolve continues to instantiate per-context correctly. Added tests to cover both get (throws) and resolve (works).

Does this PR introduce a breaking change?

• Yes
• No

Other information

• Core change: abstract-instance-resolver.ts (guard in find to also check !wrapperRef.isDependencyTreeStatic()).
• Tests: nest-application-context.spec.ts (two specs under “implicit request scope via enhancers”).

[coveralls]

Pull Request Test Coverage Report for Build 513890a5-e0b5-48f6-83b7-3f896faedccc

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.01%) to 88.939%

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Totals
Change from base Build addc9f43-f31d-4145-9327-14d30a76e998:	0.01%
Covered Lines:	7325
Relevant Lines:	8236

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💛 - Coveralls