fix: improve mass nav header rendering to obey ds customization on tabs

[xzhou82]

Description

closes #2561
briefly tested to work with termdbtest, profile, and pnet. CI passed. please test more

all pass: http://localhost:3000/testrun.html?dir=mass&name=nav.integration

Checklist

Check each task that has been performed or verified to be not applicable.

• Tests: added and/or passed unit and integration tests, or N/A
• Todos: commented or documented, or N/A
• Notable Changes: updated release.txt, prefixed a commit message with "fix:" or "feat:", added to an internal tracking document, or N/A

[karishma-gangwani]

all-pharmacotyping ds shows error in nav.js. can you check @xzhou82

error: TypeError: Cannot add property mid, object is not extensible
    at self.initUI (nav.js:291:33)
    at TdbNav.init (nav.js:62:9)
    at index.js:138:50
    at MassApp.init (app.js:117:33)
    at async Module.<anonymous> (index.js:139:10)

[xzhou82]

thanks @karishma-gangwani the bug is fixed, please test again

[karishma-gangwani]

works now. thanks @xzhou82