Prevent reset button from being cropped in world control gui plugin

[iche033]

🦟 Bug fix

Summary

The reset button is cropped in many of the example worlds that have the world control gui plugin specified.

Removing the width property reveals the button, which matches what's done in the default gui.config file

Checklist

• Signed all commits for DCO
• Added tests
• Updated documentation (as needed)
• Updated migration guide (as needed)
• Consider updating Python bindings (if the library has them)
• codecheck passed (See contributing)
• All tests passed (See test coverage)
• While waiting for a review on your PR, please help review another open pull request to support the maintainers

Note to maintainers: Remember to use Squash-Merge and edit the commit message to match the pull request summary while retaining Signed-off-by messages.

[jennuine]

Would it be better to backport this one #2151?

[codecov]

Codecov Report

Merging #2155 (cf4ad37) into gz-sim7 (9d79b62) will increase coverage by 0.01%.
The diff coverage is n/a.

❗ Current head cf4ad37 differs from pull request most recent head ded14ae. Consider uploading reports for the commit ded14ae to get more accurate results

@@             Coverage Diff             @@
##           gz-sim7    #2155      +/-   ##
===========================================
+ Coverage    65.01%   65.02%   +0.01%     
===========================================
  Files          356      356              
  Lines        28932    28932              
===========================================
+ Hits         18809    18814       +5     
+ Misses       10123    10118       -5     

see 2 files with indirect coverage changes

[iche033]

Would it be better to backport this one #2151?

oh yes, I missed that one. I'll close this and cherry pick instead.