[7.x] [reporting] Pass along generic parameters in high-order route handler (#74892)

[joshdover]

Backports the following commits to 7.x:

• [reporting] Pass along generic parameters in high-order route handler ([reporting] Pass along generic parameters in high-order route handler #74892)

[kibanamachine]

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• continuous-integration/kibana-ci/pull-request
• Commit: 7d7895d

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