ze(uss): Pulling from mainframe status bar message does not get disposed of for binary files

[zFernand0]

Describe the bug

The status bar message doesn't go away when you open a USS file as binary and then pull from mainframe

To Reproduce

1. Open a USS file as binary (via the open with encoding option)
2. Right click on the same file and Pull from mainframe
3. Notice the status bar message not getting disposed of.
   

Expected behavior

For the message to go away eventually 😋

Screenshots

Desktop (please complete the following information):

• OS: All
• Zowe Explorer Version: 3.0.3
• (Optional) Zowe CLI Version: N/A
• (Optional) Are you using Secure Credential Store? N/A

Additional context

Found while looking for a Download option for USS files and Dataset.
Thanks @roman-kupriyanov

---

Since the node's contextValue is binaryFile, the SharedContext.isDocument() doesn't consider it as a valid document. Thus we remove it from the list.

I think we just need to dispose of the status message outside the for-loop

[github-actions]

Thank you for creating a bug report.
We will investigate the bug and evaluate its impact on the product.
If you haven't already, please ensure you have provided steps to reproduce the bug and as much context as possible.

[traeok]

Turns out that Pull from Mainframe never supported binary USS files. I'm going to address this in v2 as well.

[traeok]

Keeping open until ported to v2