types/time: filter string that cannot be a unix timestamp

[shazbert]

PR Description

Did not error when using incorrect type. So force check, more performant using time.Time type for that use case so not going to handle potential edge case.

Cherry-picked from #1670

Fixes # (issue)

Type of change

Please delete options that are not relevant and add an x in [] as item is complete.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How has this been tested

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration and
also consider improving test coverage whilst working on a certain feature or package.

• go test ./... -race
• golangci-lint run
• Test X

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation and regenerated documentation via the documentation tool
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally and on Github Actions with my changes
• Any dependent changes have been merged and published in downstream modules

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 37.11%. Comparing base (8f9ebcb) to head (a83034e).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1715      +/-   ##
==========================================
- Coverage   37.13%   37.11%   -0.03%     
==========================================
  Files         414      414              
  Lines      180177   180186       +9     
==========================================
- Hits        66910    66868      -42     
- Misses     105411   105457      +46     
- Partials     7856     7861       +5     

Files with missing lines	Coverage Δ
types/time.go	94.64% <100.00%> (-5.36%)	⬇️

... and 14 files with indirect coverage changes

[thrasher-]

Thanks for making those changes

[cranktakular]

With that newest change, everything looks good!

[gloriousCode]

tack