Bluetooth: controller: legacy: Backport conformance test related changes

[cvinayak]

Describe the bug
During conformance testing of v2.2-branch, numerous implementation fixes related to conformance test changes and failures were undertaken. These fixes are missing in legacy controller in v1.14-branch.

To Reproduce
Re-run conformance testing using hci_uart application in v1.14-branch

Expected behavior
Bluetooth Controller in v1.14-branch shall meet the same level of quality as v2.2-branch for a said Bluetooth v5.1 qualified design listing.

Impact
showstopper

Screenshots or console output
NA

Environment (please complete the following information):

• OS: Linux
• Toolchain Zephyr SDK
• Commit SHA or Version used: v1.14.2

Additional context
backport PR #23091

[github-actions]

This issue has been marked as stale because it has been open (more than) 60 days with no activity. Remove the stale label or add a comment saying that you would like to have the label removed otherwise this issue will automatically be closed in 14 days. Note, that you can always re-open a closed issue at any time.

[cvinayak]

This issue corresponds to #23091

[carlescufi]

@cvinayak does #23091 fix this issue?

[cvinayak]

@cvinayak does #23091 fix this issue?

@carlescufi Yes.

[github-actions]

This issue has been marked as stale because it has been open (more than) 60 days with no activity. Remove the stale label or add a comment saying that you would like to have the label removed otherwise this issue will automatically be closed in 14 days. Note, that you can always re-open a closed issue at any time.