[ISSUE #10171] Support custom JAVA_HOME on Linux in runbroker.sh and runserver.sh

[majialoong]

Which Issue(s) This PR Fixes

• Fixes [Enhancement] Support custom JAVA_HOME on Linux in runbroker.sh and runserver.sh #10171

Brief Description

Support custom JAVA_HOME on Linux in runbroker.sh and runserver.sh, consistent with the existing fix in tools.sh.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 48.83%. Comparing base (ebf1595) to head (5101ede).

Additional details and impacted files

@@              Coverage Diff              @@
##             develop   #10172      +/-   ##
=============================================
- Coverage      48.94%   48.83%   -0.12%     
+ Complexity     13389    13358      -31     
=============================================
  Files           1373     1373              
  Lines          99924    99924              
  Branches       12908    12908              
=============================================
- Hits           48904    48794     -110     
- Misses         45097    45191      +94     
- Partials        5923     5939      +16     

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