Add stack trace to bootstrap error message

[ShaneOH]

Addendum to #4620
Closes #4877

• Add stack trace to bootstrap error message

Sample output:

PHPUnit 10.0-ga5ad02566 by Sebastian Bergmann and contributors.
 
Error in bootstrap script: PHPUnit\TestFixture\MyException:
Big boom. Big bada boom.
#0 /Users/shane/phpunit/src/TextUI/Application.php(415): include_once()
#1 /Users/shane/phpunit/src/TextUI/Application.php(238): PHPUnit\TextUI\Application-handleBootstrap('/Users/shane/ph...')
#2 /Users/shane/phpunit/src/TextUI/Application.php(95): PHPUnit\TextUI\Application->handleArguments(Array)
#3 /Users/shane/phpunit/src/TextUI/Application.php(78): PHPUnit\TextUI\Application->run(Array, true)
#4 Standard input code(11): PHPUnit\TextUI\Application::main()
#5 {main}

I edited the regression test for #4620 to expect output including a variable number of newlines as would be expected for a stack trace output -- please let me know if any changes are needed!

[sebastianbergmann]

Can you change this to target 9.5, please?

[codecov]

Codecov Report

Merging #4878 (7e8727a) into 9.5 (988e84c) will increase coverage by 0.14%.
The diff coverage is 83.11%.

❗ Current head 7e8727a differs from pull request most recent head c8bde01. Consider uploading reports for the commit c8bde01 to get more accurate results

@@             Coverage Diff              @@
##                9.5    #4878      +/-   ##
============================================
+ Coverage     84.08%   84.22%   +0.14%     
- Complexity     4631     5775    +1144     
============================================
  Files           274      549     +275     
  Lines         12683    16537    +3854     
============================================
+ Hits          10665    13929    +3264     
- Misses         2018     2608     +590     

Impacted Files	Coverage Δ
src/Event/Value/Test/TestCollectionIterator.php	0.00% <0.00%> (ø)
...rc/Event/Value/TestData/DataFromTestDependency.php	0.00% <0.00%> (ø)
...vent/Value/TestData/TestDataCollectionIterator.php	0.00% <0.00%> (ø)
...vent/Value/TestSuite/FailureCollectionIterator.php	0.00% <0.00%> (ø)
...ework/Attributes/DependsExternalUsingDeepClone.php	0.00% <0.00%> (ø)
...rk/Attributes/DependsExternalUsingShallowClone.php	0.00% <0.00%> (ø)
src/Framework/Attributes/DependsOnClass.php	0.00% <0.00%> (ø)
...mework/Attributes/DependsOnClassUsingDeepClone.php	0.00% <0.00%> (ø)
...ork/Attributes/DependsOnClassUsingShallowClone.php	0.00% <0.00%> (ø)
src/Framework/Attributes/DependsUsingDeepClone.php	0.00% <0.00%> (ø)
... and 623 more

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[ShaneOH]

@sebastianbergmann Sure, done!