typing: unify type hints for total keyword arguments in rich.progress

[neutrinoceros]

Type of changes

• Bug fix
• New feature
• Documentation / docstrings
• Tests
• Other

Checklist

• I've run the latest black with default args on new code.
• I've updated CHANGELOG.md and CONTRIBUTORS.md where appropriate.
• [NA] I've added tests for new code.
• I accept that @willmcgugan may be pedantic in the code review.

Description

I think this qualifies as a bug fix since the underlying object in all cases is rich.progress.Task, which is already documented as using a float total argument rather than an int.

[neutrinoceros]

switching to draft until I manage to actually satisfy mypy

[codecov]

Codecov Report

Merging #1131 (4eac117) into master (86a3844) will decrease coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head 4eac117 differs from pull request most recent head e08a838. Consider uploading reports for the commit e08a838 to get more accurate results

@@            Coverage Diff             @@
##           master    #1131      +/-   ##
==========================================
- Coverage   99.77%   99.76%   -0.01%     
==========================================
  Files          69       67       -2     
  Lines        6322     6074     -248     
==========================================
- Hits         6308     6060     -248     
  Misses         14       14              

Flag	Coverage Δ
unittests	99.76% <100.00%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
rich/logging.py	100.00% <ø> (ø)
rich/progress_bar.py	100.00% <ø> (ø)
rich/_log_render.py	100.00% <100.00%> (ø)
rich/progress.py	97.05% <100.00%> (ø)
rich/table.py	99.72% <0.00%> (-0.01%)	⬇️
rich/bar.py	100.00% <0.00%> (ø)
rich/text.py	100.00% <0.00%> (ø)
rich/tree.py	100.00% <0.00%> (ø)
rich/align.py	100.00% <0.00%> (ø)
rich/pager.py	100.00% <0.00%> (ø)
... and 24 more

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[willmcgugan]

Thanks.