fix: remove bash login shell when run from task to align with vscode

[amiramw]

Following discussion: #8818

bash login shell (-l) causing different behavior compared to non login.
for example - it rebuilds the PATH environment and ignore what was defined in theia docker.

this change aligns with vscode that doesn't run with login shell.

Signed-off-by: Amiram Wingarten amiram.wingarten@sap.com

How to test

1. Start theia from docker with debian and set PATH to add to some new folder
2. Put some executable in the new folder
3. Create simple shell task that runs the executable:

{
	"version": "2.0.0",
	"tasks": [
		{
			"label": "MyTask",
			"type": "shell",
			"command": "<my executable>"
		}
	]
}

After this fix the run is successful. Before this fix it fail with error code 127 as the executable is not found.

Review checklist

• as an author, I have thoroughly tested my changes and carefully followed the review guidelines

Reminder for reviewers

• as a reviewer, I agree to behave in accordance with the review guidelines

[paul-marechal]

Please just add an entry to the CHANGELOG's breaking changes to mention that shell tasks will no longer be ran into login shells.

[amiramw]

Please just add an entry to the CHANGELOG's breaking changes to mention that shell tasks will no longer be ran into login shells.

Done