Update the commandline-oauth-scopes.py example

[greg-db]

• switch to using the account_info.read scope instead of files.metadata.write as the assert didn't account for the scope dependency on files.metadata.write which caused an error
• actually use the client like in the other examples

[codecov]

Codecov Report

Merging #470 (dad606b) into main (223fe46) will decrease coverage by 0.58%.
The diff coverage is n/a.

@@ Coverage Diff @@ ## main #470 +/- ## ========================================== - Coverage 64.26% 63.69% -0.58%  ========================================== Files 31 31 Lines 52609 52609 Branches 3841 3841 ========================================== - Hits 33810 33510 -300  - Misses 18638 19064 +426  + Partials 161 35 -126 

Flag	Coverage Δ
integration	?
unit	63.69% <ø> (ø)

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