toolchains: Allow users to provide custom paths to toolchains (#37009)
- **toolchains: Add new state to toolchain selector**
- **Use toolchain term for Add Toolchain button**
- **Hoist out a meta function for toolchain listers**
Closes #27332
Release Notes:
- python: Users can now specify a custom path to their virtual
environment from within the picker.
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Co-authored-by: Danilo Leal <daniloleal09@gmail.com>
6a7b84eb87Piotr Osiewicz committed on 9/5/2025, 10:47:39 PM· committed by GitHubparent59bdbf5