Variables View goes into a weird state when you have a filter and switch language runtimes

[dfalty]

Positron Version:

Positron Version: 2023.11.0 (Universal) build 1166
Code - OSS Version: 1.84.0
Commit: 1c59a02
Date: 2023-11-15T03:09:15.635Z
Electron: 25.9.2
ElectronBuildId: undefined
Chromium: 114.0.5735.289
Node.js: 18.15.0
V8: 11.4.183.29-electron.0
OS: Darwin arm64 22.6.0

Steps to reproduce the issue:

1. Select an R language runtime
2. Create a variable "x <- 1"
3. Create another variable "myvariable <- 1"
4. Search in the filter for "myvar" and observe that it should filter out just the one variable
5. Without clearing the filter, select a Python language runtime from the dropdown menu
6. Observe that "myvar" is still in the filter but it's not actually filtering the Python environment
7. Press "x" on the filter to clear
8. Select the R language runtime
9. Observe that the filter text box is empty but the pane is still filtered and "x" variable doesn't appear

You are now in a weird state where new variables won't show unless it matches the past filter even though there is no text. I got into this state and was really confused as to why new variables weren't showing up. I tried selecting the refresh button, but it didn't do anything. I thought I broke the environment pane.

The way I found to get out of this state was to type into the filter and press "x" to cancel it and it will put you back to normal.

What did you expect to happen?

I actually expect that when I change to another language runtime, the filter either clears out or stays and actually applies. If that were the case, then the user wouldn't encounter the weird state.

[dhruvisompura]

Mega-Triage Note - 2/5/2025: Let's clear the filters when we change runtimes