Prevent Player Simulator crashes from fake-player dimension transitions (Ex Deorum End Cake interaction)

[Copilot]

Player Simulator interactions with Ex Deorum End Cake could trigger fake-player dimension transition logic, causing server crashes and client hangs. This PR makes fake-player dimension transitions inert and adds a focused regression test for that path.

• Fake player hardening

  • ExtendedFakePlayer now overrides dimension transition behavior to no-op.
  • This prevents simulated interactions from invoking cross-dimension player transfer mechanics.

• Regression coverage

  • Added a new Player Simulator game test to assert ExtendedFakePlayer#changeDimension(...):
    • returns the same fake player instance
    • does not move the fake player to the target dimension

• Representative change

  @Override
  public @Nullable Entity changeDimension(DimensionTransition transition) {
      return this;
  }

[coveralls]

Coverage Report for CI Build 25557915839

Coverage increased (+0.03%) to 71.279%

Details

• Coverage increased (+0.03%) from the base build.
• Patch coverage: No coverable lines changed in this PR.
• 13 coverage regressions across 1 file.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

13 previously-covered lines in 1 file lost coverage.

File	Lines Losing Coverage	Coverage
org/cyclops/integratedtunnels/core/ExtendedFakePlayer.java	13	34.29%

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Coverage Stats

Relevant Lines:	6356
Covered Lines:	5039
Line Coverage:	79.28%
Relevant Branches:	1398
Covered Branches:	488
Branch Coverage:	34.91%
Branches in Coverage %:	Yes
Coverage Strength:	4.14 hits per line

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💛 - Coveralls