drivers: can: loopback driver only compares loopback frames against CAN IDs in installed filters

[henrikbrixandersen]

Describe the bug
The CAN loopback driver only compares loopback frames against CAN IDs in installed filters. It must also compare the CAN ID type (standard or extended) and the RTR bit.

To Reproduce
Steps to reproduce the behavior:

1. See above along with the test suite accompanying the fix

Environment (please complete the following information):

• Commit SHA: 62f19cc

Additional context
This was discovered while implementing and testing a fix for #47204.