fix: makeEventFunctions take an array of parameters

[mofojed]

• Previously every emit required exactly one parameter, which is not the case
• Allow zero or more parameters

[codecov[bot]]

Codecov Report

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

Project coverage is 46.65%. Comparing base (a257296) to head (61f0c15). Report is 6 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #2186 +/- ## ========================================== - Coverage 46.66% 46.65% -0.02% ========================================== Files 692 692 Lines 38629 38583 -46 Branches 9814 9845 +31 ========================================== - Hits 18028 18000 -28 + Misses 20548 20530 -18 Partials 53 53 ``` | [Flag](https://app.codecov.io/gh/deephaven/web-client-ui/pull/2186/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=deephaven) | Coverage Δ | | |---|---|---| | [unit](https://app.codecov.io/gh/deephaven/web-client-ui/pull/2186/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=deephaven) | `46.65% <100.00%> (-0.02%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=deephaven#carryforward-flags-in-the-pull-request-comment) to find out more.

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