[GEOS-10719] app-schema GetFeature numberMatched breaks with views/ta…

[NielsCharlier]

…bles without PK (test)

Checklist

• I have read the contribution guidelines.
• I have sent a Contribution Licence Agreement (not required for small changes, e.g., fixing typos in documentation).
• First PR targets the main branch (backports managed later; ignore for branch specific issues).
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For core and extension modules:

• New unit tests have been added covering the changes.
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• Bug fixes and small new features are presented as a single commit.
• Each commit has a single objective (if there are multiple commits, each has a separate JIRA ticket describing its goal).

[taba90]

Looks good to me.