fix plugin is compatible

[Thykof]

Bug

I want to install the wallet plugin but it not possible and there is a warning saying that it requires version 0.3.0 of massa station, I run version 0.6.1 of massa station.

Fix

This bug is introdoced in version 0.6.1, it was working well in 0.6.0. This PR introduce the bug: #1316

The fix is to rename the variable isCompatible.

Delivery Quality Checklist

• Breaking Changes in API:
  Does this PR introduce breaking changes in the API?

  • If yes, have you considered making it backward compatible?
  • If backward compatibility is not considered, set the "breaking-change" label.

• Changelog:

  • For bugfix PR, set the "bugfix" label
  • If this change should not appear in changelog, use "ignore-for-changelog" label

• Version Update Handling:
  Have you ensured that the version update by user is handled correctly?

• PR Dependency:
  Does this PR depend on another PR?

  • If yes, is it necessary for the dependency to be released prior to merging this one?

• Documentation:

  • Are any necessary changes made to user-facing documentation?
  • Confirm that API documentation is updated with any relevant changes.
  • Check that README and other documentation files are accurate and current.