Speed up slow input constructor test

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Differential Revision: D63838676

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This pull request was exported from Phabricator. Differential Revision: D63838676

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This pull request was exported from Phabricator. Differential Revision: D63838676

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Codecov Report

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

Project coverage is 99.98%. Comparing base (a0a2c05) to head (e4217cd). Report is 2 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #2564 +/- ## ======================================= Coverage 99.98% 99.98% ======================================= Files 193 195 +2 Lines 17071 17112 +41 ======================================= + Hits 17068 17109 +41 Misses 3 3 ```

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This pull request was exported from Phabricator. Differential Revision: D63838676

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This pull request has been merged in pytorch/botorch@c7b3d8215771b23b54c9a22dbf808901b58afef3.