Reactivity problem with cell value in Data Explorer table inspector

[seancolsen]

Description

In the Data Explorer, the cell value in the table inspector only updates when the cell selection changes. It doesn't update when the data changes.

Steps to reproduce

https://github.com/centerofci/mathesar/assets/42411/200d1f3b-999d-41e2-9b85-0240817ec368

[seancolsen]

I stumbled upon this while working on #3037. I may try to fix it if I can see an easy path. If not, I'll leave this ticket open. I recommend that anyone who would like to pick this up please wait until after #3037 is merged (or you'll have to contend with merge conflicts).

[seancolsen]

Offending code is here.