Bridge tx via Relay is classified as Swapping activity

[derHowie]

Fixes BX-1470

What changed (plus any additional context for devs)

The pending state of bridging currently says 'swapping', we want it to say bridging.

Screen recordings / screenshots

https://www.loom.com/share/5660617394154662b1c1e095a7560a61

What to test

Perform a bridge, navigate to the activity screen, observe whether the pending state looks correct

[linear[bot]]

BX-1470 Bridge tx via Relay is classified as Swapping activity