Exclude unauthorized streams from catalog

[MuralidharT03]

Description of change

This PR updates the tap’s discovery flow to exclude streams the provided AppsFlyer credentials cannot read, by probing each stream during discovery and pruning inaccessible streams from the generated Singer catalog.

Changes:

• Add per-stream access probing (BaseStream.check_access() + Client.probe_request()) and exclude inaccessible streams during discovery.
• Update CLI discovery wiring to pass the active Client into discovery.
• Add unit tests covering access checks, pruning logic, and do_discover() output.

Jira: SAC-30993

Manual QA steps

Risks

Rollback steps

• revert this branch

AI generated code

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• this PR has been written with the help of GitHub Copilot or another generative AI tool

[Copilot]

Pull request overview

This PR updates the tap’s discovery flow to exclude streams the provided AppsFlyer credentials cannot read, by probing each stream during discovery and pruning inaccessible streams from the generated Singer catalog.

Changes:

• Add per-stream access probing (BaseStream.check_access() + Client.probe_request()) and exclude inaccessible streams during discovery.
• Update CLI discovery wiring to pass the active Client into discovery.
• Add unit tests covering access checks, pruning logic, and do_discover() output.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
tests/unittests/test_discovery.py	Adds unit tests for discovery access checks, pruning behavior, and do_discover() integration.
tap_appsflyer/streams/abstracts.py	Introduces BaseStream.check_access() to probe stream accessibility.
tap_appsflyer/discover.py	Applies access checks during discovery and prunes inaccessible streams/children from the catalog.
tap_appsflyer/client.py	Adds probe_request() for single-shot discovery probes.
tap_appsflyer/init.py	Passes client through do_discover() into discover(client).
setup.py	Bumps package version, changes requests pin, and adds dev extras.
.github/copilot-instructions.md	Adds internal contributor guidance for implementing Singer taps/targets.

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