Allow Viewing of Pending Transactions

[tmashuang]

What problem are you trying to solve?
#5739
#4760
#5687
I believe somehow Pending Transactions(Transactions that have not been submitted but approved?) are showing up in the transaction history. I am still unsure how users are getting pasted the transaction confirmation without either confirming/rejecting the transactions. Possible issues could be that we are populating the Mainnet tx history with Custom RPC/Ganache txs via getting metamaskNetworkId is incorrect. Another theory is dropped txs are coming back. Either way the local nonce is incorrectly calculate with the list of pending txs. I believe the only way to clear them now is to Reset Account.

Describe the solution you'd like
Be able to view all pending txs and reject them.

Additional context
These pending tx aren't transitioning to failed/dropped.

[brad-decker]

@tmashuang this issue seems old due to the fact that we now display pending txs and allow cancel/retry/etc -- can you confirm and close if this is out of date?