.zshrc config overwrites Hermit managed PATH

Hermit working correctly from Terminal:

```sh
node -v
# prints v17.6.0 (my global binary)

mkdir ~/Downloads/ij-test
cd ~/Downloads/ij-test
hermit init
hermit install node

node -v
# prints v17.7.1 (hermit binary)
```

However, it is failing within IJ:

1. Load IJ.
2. Open the folder `~/Downloads/ij-test`.
3. Trust it.
4. Enable Hermit plugin
5. Open IJ Terminal

```sh
node -v
# prints v17.6.0 (my global binary)

source ./bin/activate-hermit
node -v
# prints v17.7.1 (hermit binary)
```

Reproduce the issue in the IJ Terminal using the reported ~/Downloads/ij-test project and compare node resolution before and after sourcing ./bin/activate-hermit. Trace how the Hermit plugin and the .zshrc configuration set the terminal environment; done means the IJ Terminal uses the Hermit-managed node without manual activation.

Written by the indexing model from the issue text.