Select the $eq operator by default when filtering a table's rows

### Is your proposal related to a problem?

When filtering a table 80% of the time you want to find some uuid of a specific row. Currently you always have to select the $eq operator manually.

### Describe the solution you'd like

Select the $eq operator by default. That way, 80% of the time you save the user 2 clicks when setting up a filter. And the other 20% of the time it still only takes 2 clicks to choose a different operator. So there is no downside.

### Describe alternatives you've considered

Always manually select the operator.
Inject some macro using chrome extensions to set the operator to $eq automatically.

Start by locating the table row-filter UI in the TypeScript frontend and identify where the operator selection is initialized. Verify the current filtering flow, then confirm that new filters initially use $eq while other operators remain selectable; test the filter interaction in the table UI.

Written by the indexing model from the issue text.