Add a warning icon to Math node expressions with errors as tooltips

[Keavon]

Partly closes #2026

[cubic-dev-ai]

All reported issues were addressed across 12 files

<sub>Reply with feedback, questions, or to request a fix.

Re-trigger cubic</sub>

[cubic-dev-ai]

All reported issues were addressed across 7 files (changes from recent commits).

<sub>Reply with feedback, questions, or to request a fix.

Re-trigger cubic</sub>

[0HyperCube]

This fails to catch common areas such as typing xi into the f(x) node. A user might expect this to evaluate as x * i but instead the output is set to zero and there is no visible indicator in the UI.

[Keavon]

Correct, that is a known limitation as of this version, because it only reports parse-time errors and does not consider host-supplied bindings that can change on each execution. That'll be fixed in upcoming PRs. Also the fact that it returns 0 is currently the fallback being used as a stopgap until the async refactor is completed, at which point we can propagate an error. Thanks for testing this out and being a second pair of eyes!