fix: add error when using media type assertion with oci layout

[wangxiaoxuan273]

What this PR does / why we need it:
See pr 887

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #887

Please check the following list:

• Does the affected code have corresponding tests, e.g. unit test, E2E test?
• Does this change require a documentation update?
• Does this introduce breaking changes that would require an announcement or bumping the major version?
• Do all new files have an appropriate license header?

[qweeah]

Can you help add e2e test for this case

[wangxiaoxuan273]

Added e2e test cases.

[codecov-commenter]

Codecov Report

Merging #890 (2cd9fa6) into main (a55201b) will not change coverage.
The diff coverage is n/a.

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@@           Coverage Diff           @@
##             main     #890   +/-   ##
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  Coverage   66.39%   66.39%           
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  Files          21       21           
  Lines         860      860           
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  Hits          571      571           
  Misses        243      243           
  Partials       46       46           

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[qweeah]

LGTM