4662 [Maintenance] Add periods to all the inline validation error messages

[Sun-Mountain]

Resolves #4662

Description

For consistency, add punctuation to the end of every error message.

Chromatic Link

https://www.chromatic.com/build?appId=61d5b948cf6f17003a12bf77&number=1484

This pull request is ready to code review when

• [x] Automated tests are updated (and all tests are passing)
• [x] Pull request has been labeled, if applicable with feature, content, bug, tests, refactor

This pull request is ready to test when

• [x] Code has been reviewed by someone other than the original author

This pull request is ready to review when QA has

• [x] Verified the functionality related to the change

This pull request can be merged when

• [x] Design has approved the experience
• [x] Product has approved the experience

[codecov[bot]]

Codecov Report

Merging #4682 (19a7c25) into main (261651b) will not change coverage. The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #4682   +/-   ##
=======================================
  Coverage   91.76%   91.76%           
=======================================
  Files         286      286           
  Lines        9290     9290           
  Branches     1894     1894           
=======================================
  Hits         8525     8525           
  Misses        736      736           
  Partials       29       29           

Flag	Coverage Δ
api	∅ <ø> (∅)
common	98.75% <ø> (ø)
web	91.38% <100.00%> (ø)

Impacted Files	Coverage Δ
e2e/cypress/helpers/mmis/mmis-admin-check.js	100.00% <ø> (ø)
...vities/cost-allocation/CostAllocateFFPQuarterly.js	100.00% <ø> (ø)
...e/cypress/helpers/apd/assurances-and-compliance.js	60.99% <100.00%> (ø)

... and 2 files with indirect coverage changes

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[cms-eapd-bot]

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