[CF-4208] Add --name/--status filtering to on-prem application list

[Paras Negi (paras-negi-flink)]

Release Notes

New Features

• Added --name and --status filters to the on-prem (Confluent Platform / CMF) confluent flink application list command, to filter large environments server-side instead of "list everything then grep".

Checklist

• I have successfully built and used a custom CLI binary, without linter issues from this PR.
• I have clearly specified in the What section below whether this PR applies to Confluent Cloud, Confluent Platform, or both.
• I have attached manual CLI verification results in the Test & Review section below.
• I have added appropriate CLI integration or unit tests for any new or updated commands and functionality.
• I confirm that this PR introduces no breaking changes or backward compatibility issues.
• I have indicated the potential customer impact if something goes wrong in the Blast Radius section below.
• I have put checkmarks below confirming that the feature associated with this PR is enabled in:
  • Confluent Cloud prod
  • Confluent Cloud stag
  • Confluent Platform
  • Check this box if the feature is enabled for certain organizations only

Stacked on #3424 (--page-size). Base branch is cli-cf-4208-flink-list-limit-filter, so this diff shows only the filtering change. Review/merge #3424 first.

What

Confluent Platform (CMF on-prem) only — filtering half of CF-4208; Confluent Cloud flink commands are untouched.

flink application list had no filtering, so at scale the only pattern was "list everything then grep" (CF-4202). This adds server-side filtering:

• --name — by application name; supports a trailing * wildcard (e.g. --name my-app*).
• --status — by Flink job state (RUNNING, FINISHED, FAILED, CANCELED, RECONCILING, COMPLETED, UNKNOWN).

Both compose into CMF's single generic filter query as name=<value>,state=<value>; ListApplications gains a filter argument applied before pagination. An unknown --status prints a [WARN] to stderr but still queries, since CMF treats an unknown state as a no-match (matching statement list --status).

Blast Radius

• Scoped to application list; with neither flag set, behavior is unchanged (no filter param). No CmfClientInterface/mock change. Non-breaking, easy to revert.

References

• Jira: CF-4208; motivation CF-4202.
• Base PR this stacks on: [CF-4208] Add --page-size to on-prem Flink list commands #3424.

Test & Review

• Unit TestBuildApplicationFilter: name / wildcard / status / combined composition (name=a*,state=RUNNING).
• Integration: --name exact + wildcard, --status match / no-match / invalid (asserts [WARN] + empty), combined --name+--status; help golden regenerated. make lint clean.

# combined --name + --status (AND semantics)
$ confluent flink application list --environment default --name default-application-1* --status reconciling
          Name          | Environment |     Job Name      | Job Status
------------------------+-------------+-------------------+--------------
  default-application-1 | default     | State machine job | RECONCILING

# unrecognized --status -> visible warning, still queries
$ confluent flink application list --environment default --status bogus -o json
[WARN] Invalid status "BOGUS". Valid statuses are "RUNNING", "FINISHED", "FAILED", "CANCELED", "RECONCILING", "COMPLETED", and "UNKNOWN".
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