fix(mail): add backward-compatible redirects for mail.api.spamd.*

[s-aga-r]

Description

Adds backward-compatible whitelisted-method redirects for the standalone mail app's SpamD endpoints, now that the API lives under the combined suite app:

• mail.api.spamd.scan → suite.mail.api.spamd.scan
• mail.api.spamd.get_spam_score → suite.mail.api.spamd.get_spam_score

Also groups the existing redirects under section comments (Auth / Outbound / Inbound / SpamD) for readability.

🤖 Generated with Claude Code

[greptile-apps]

Confidence Score: 5/5

This looks safe to merge.

• No blocking issues found in the changed code.
• The new hook entries point to existing whitelisted SpamD API methods with compatible parameters.

Important Files Changed

Filename	Overview
suite/hooks.py	Adds two legacy SpamD whitelisted-method redirects; the target methods exist and match the expected Frappe endpoint shape.

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