Prevent updates to cell text when stauts of cell has changed

[DonJayamanne]

For #7844

• Pull request represents a single change (i.e. not fixing disparate/unrelated things in a single PR)
• Title summarizes what is changing
• Has a news entry file (remember to thank yourself!)
• Appropriate comments and documentation strings in the code
• [n/a] Has sufficient logging.
• [n/a] Has telemetry for enhancements.
• [no] Unit tests & system/integration tests are added/updated
• [n/a] Test plan is updated as appropriate
• [n/a] package-lock.json has been regenerated by running npm install (if dependencies have changed)
• [n/a] The wiki is updated with any design decisions/details.

[codecov-io]

Codecov Report

Merging #7973 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #7973   +/-   ##
=======================================
  Coverage   59.26%   59.26%           
=======================================
  Files         498      498           
  Lines       22306    22306           
  Branches     3581     3581           
=======================================
  Hits        13220    13220           
  Misses       8263     8263           
  Partials      823      823

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[IanMatthewHuff]