fix: revert A01 padding

[Lash-L]

This should resolve: home-assistant/core#159492

Reverts change from: #662

[Copilot]

Pull request overview

This PR fixes a bug where the A01 protocol was incorrectly double-padding encrypted payloads. The fix removes padding operations from the low-level encryption adapter for A01, as padding is already handled at the higher protocol layer.

Key changes:

• Removed padding in EncryptionAdapter._encode() for A01 version (line 279)
• Removed unpadding in EncryptionAdapter._decode() for A01 version (line 303)

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

Files with missing lines	Coverage Δ
roborock/protocol.py	81.81% <100.00%> (ø)

... and 1 file with indirect coverage changes

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