Java compiler error matching

[SebastianSchlecht]

When compiling a template containing a mix of warnings and errors the first warning/error will be matched by getErrorMessage which might not be the desired error message.
This leads to a misleading TemplateException like

10:32:17,860 ERROR Failed to execute goal gg.jte:jte-maven-plugin:3.1.13:precompile (web-templates) on project example: Execution web-templates of goal gg.jte:jte-maven-plugin:3.1.13:precompile failed: Failed to compile template, error at some/file/with/warning.jte:35

with the culprit buried deeper inside the log.

This proposed change will only match messages of the type 'error' and therefore shows the message responsible for the failed compilation on top.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.16%. Comparing base (dbecede) to head (7cd0a95).
Report is 3 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #432      +/-   ##
============================================
- Coverage     91.23%   91.16%   -0.07%     
- Complexity     1219     1220       +1     
============================================
  Files            76       76              
  Lines          3170     3170              
  Branches        491      492       +1     
============================================
- Hits           2892     2890       -2     
- Misses          167      169       +2     
  Partials        111      111              

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[casid]

Awesome, thanks @SebastianSchlecht!