Fix validate command not logging filename with only deprecations

[HermanBilous]

Any change needs to be discussed before proceeding. Failure to do so may result in the rejection of
the pull request.

Description

printInvalidDocuments checked always checked whether errors field of an invalid document was not empty before rendering deprecated fields usage. This meant that if a file with operation that used a deprecated field did not have any errors, there would be a message "Detected 1 document with deprecated fields:" without listing the file or the deprecation warning itself.

Fixes #2883

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as
  expected)
• This change requires a documentation update

Screenshots/Sandbox (if appropriate/relevant):

Adding links to sandbox or providing screenshots can help us understand more about this PR and take
action on it as appropriate

How Has This Been Tested?

Added relevant unit test for the change. Tested it on local machine via creating 2 files, one with schema with deprecated field and one with operation that uses said deprecated field.

Test Environment:

• OS:
• @graphql-inspector/...:
• NodeJS:

Checklist:

• I have followed the
  CONTRIBUTING doc and the
  style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• [~] I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

Further comments

If this is a relatively large or complex change, kick off the discussion by explaining why you chose
the solution you did and what alternatives you considered, etc...