Prevent popup widget from wrapping to next line

[labkey-jeckels]

Rationale

Protein name display looks better when the popup widget isn't wrapped to the next line in a table cell.

Changes

• Inject a non-breaking space to ensure no inopportune wrapping

Tasks 📍

• Claude Code Review
• Manual Testing
  • Create a Panorama folder (subtype: Experiment)
  • Import MRMer.zip (https://github.com/LabKey/targetedms/blob/develop/test/sampledata/TargetedMS/MRMer.zip)
  • Click the Peptide Groups link in the runs grid
    • Check that the protein name and down-arrow render without wrapping
      • Verify Safari
      • Verify Firefox
      • Verify Chrome
• Test Automation

[labkey-jeckels]

MS2 suite is passing after a test fix: https://teamcity.labkey.org/buildConfiguration/LabKey_263Release_Community_ModuleSuites_Ms2Postgres/3996959