Fix ChangeType UOE on JS.ComputedPropertyMethodDeclaration

[knutwannheden]

Motivation

ChangeType.postVisit crashes with UnsupportedOperationException when it encounters JS.ComputedPropertyMethodDeclaration:

java.lang.UnsupportedOperationException: To change the return type of this method declaration, use withMethodType(..)
  org.openrewrite.javascript.tree.JS$ComputedPropertyMethodDeclaration.withType(JS.java:3899)
  org.openrewrite.java.ChangeType$JavaChangeTypeVisitor.postVisit(ChangeType.java:229)

This is the third variant of the same underlying issue:

• Fix ChangeType UnsupportedOperationException on JS FunctionCall nodes #7239 added a MethodCall catch-all for JS.FunctionCall etc.
• Fix UnsupportedOperationException in Py.ExpressionTypeTree.withType() #7314 caught UOE inside Py.ExpressionTypeTree.withType() itself.
• Neither covers JS.ComputedPropertyMethodDeclaration, which implements JS, Statement, TypedTree (not MethodCall, not J.MethodDeclaration), so it hit the generic TypedTree fallback.

Observed volume: ~13 per-file errors/day on production runs of NoGuavaPredicate (a sub-recipe of "Java best practices") against TypeScript repositories.

Summary

• New interface org.openrewrite.java.tree.MethodDeclarationLike (parallel to MethodCall) exposes getMethodType() / withMethodType(..).
• J.MethodDeclaration and JS.ComputedPropertyMethodDeclaration now implement it (signatures were already there).
• ChangeType.postVisit has a new branch for MethodDeclarationLike, placed after the MethodCall branch and before the generic TypedTree fallback.
• New test ChangeTypeAdaptabilityTest#computedPropertyMethodDeclarationDoesNotThrow exercises the path end-to-end.

Known follow-up

K.SpreadArgument and K.StatementExpression also throw UOE from withType(..), but their semantics ("cannot be changed directly" / "cannot have a type") do not fit MethodDeclarationLike. Those are not addressed here and would need separate handling.

Test plan

• New ChangeTypeAdaptabilityTest#computedPropertyMethodDeclarationDoesNotThrow reproduces the UOE on main and passes on this branch.
• ./gradlew :rewrite-java-test:test --tests org.openrewrite.java.ChangeTypeTest — 81 tests, all pass.
• ./gradlew :rewrite-javascript:integTest --tests org.openrewrite.javascript.ChangeTypeAdaptabilityTest — 2 tests, all pass.
• ./gradlew assemble — clean build across all modules.
• ./gradlew :rewrite-javascript:test — green.