Gblackburn/regression target sendkeys 00915

[GBlackburnMicrosoft]

This is reproduction of https://github.com/tmux-python/tmuxp/issues/915 based off of https://github.com/tmux-python/tmuxp/issues/915.

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 70.39%. Comparing base (9efdf97) to head (ca4c994).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #917 +/- ## ======================================= Coverage 70.39% 70.39% ======================================= Files 26 26 Lines 1956 1956 Branches 409 409 ======================================= Hits 1377 1377 Misses 453 453 Partials 126 126 ```

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[tony]

@GBlackburnMicrosoft This now passes via:

tmuxp v1.42.0 (PyPI, changes, release), via libtmux v0.34.0 (PyPI, changes, release)

[tony]

Closing this per merge last week of tmuxp v1.42.0 (PyPI, changes, release), via libtmux v0.34.0 (PyPI, changes, release)

Also close #916.