Azure Pipelines: In Cloud Shell, running a pipeline with the --open option doesn't spawn a new browser tab

**Describe the bug**
When you enter the command `az pipelines run --id --open`, a browser tab is supposed to open. The spawned tab will contain the new pipeline run's results page. The browser tab does open when I enter the command from my local Git Bash installation, but it doesn't open when I enter the command in a Cloud Shell (Bash) environment.

I wrote an article where I had to use this command, but because of this issue, I had to create a workaround by outputting the URL that the page opens, and telling the user to open that URL if the new tab doesn't appear.

**To Reproduce**
1. Go to (a sample article that I authored on Microsoft Docs),
2. Follow the instructions in the **Sample script** section by:
- Saving and pushing the YAML file to your remote GitHub repository.
- Filling in the placeholders in the Azure CLI code (there are 7 of them).
- Saving or uploading the Azure CLI code to a file in Cloud Shell (Bash).
- Entering `bash .sh` in Cloud Shell to run the script.

You'll eventually see output similar to the following, but a new browser tab with the pipeline results does not spawn:

```console
Go to the pipeline run's web page to view the output results for the 1st run.
If the web page doesn't automatically appear, go to:
https://dev.azure.com/v-dele/74a24d9d-c15a-4749-84f1-82b0ce81d3d7/_build/results?buildId=207
Press Enter to change the value of one of the variable group's nonsecret variables, then run again:
```

**Expected behavior**
A new browser tab automatically opens that shows the results of the new pipeline run.

**Environment summary**
- An Azure DevOps personal access token
- An Azure DevOps account or organization (in https://dev.azure.com)
- Your own GitHub repository (to save the pipeline scripts)
- Cloud Shell (https://shell.azure.com) using the Bash option

**Additional context**
If there are other Azure CLI commands that spawn a browser tab, they may also be hindered by this issue.

Cc: @dbradish-microsoft