IDEA-383439 Make sure modules are named consistently

[akerimsenol]

Note

Unifies holder and source set module naming, especially under phased sync, by routing through new helper overloads that use build path and root project name.

• Gradle module naming:
  • Phased sync: getInternalModuleName now builds names via getHolderModuleName(...) or resolveSourceSetModuleName(...) using build root path and root project name.
  • New overloads: add private getHolderModuleName(ProjectResolverContext, Path, String, ExternalProject) and resolveSourceSetModuleName(ProjectResolverContext, Path, String, ExternalProject, String); public variants delegate to them.
  • Conflict handling: when a computed source set module name already exists in EntityStorage, append ~1.

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[nskvortsov]

Please add a test covering this fix. E.g., you could run sync two times with different values for the gradle.phased.sync.bridge.disabled and assert that modules have consistent names.