Prevent http route resolution for requests made directly to server with 4xx response codes.

[Channyboy]

When the server is handling requests made to the server itself (i.e., not through a deployed application) and a 4xx response code is encountered, there should not be an HTTP route resolved for the HTTP stat

• I have considered the risk of behavior change or other zero migration impact (https://github.com/OpenLiberty/open-liberty/wiki/Behavior-Changes).
• If this PR fixes an Issue, the description includes "Fixes #FILLMEIN" or "Resolves #FILLMEIN" (verify release bug label if applicable: https://github.com/OpenLiberty/open-liberty/wiki/Open-Liberty-Conventions).
• If this PR resolves an external Known Issue (including APARS), the description includes "Fixes #FILLMEIN" or "Resolves #FILLMEIN".

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fixes #30567

[Channyboy]

#build
(view Open Liberty Personal Build - ❌ completed with errors/failures.)
#spawn.fullfat.buckets=io.openliberty.http.monitor_fat

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[LibbyBot]

Code analysis and actions

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• 3 FAT files were changed, added, or removed.

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• 1 product code files were changed.

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