Switching network doesn't update the default value

[srirambv]

Description

Switching network doesn't update the default value

Steps to reproduce

1. Add a custom network
2. Open Send screen
3. Set network to Mainnet, ETH is the default token listed
4. Enter a default % value or manually enter it
5. Select network drop down and select the custom network
6. Input value and default asset doesn't reset
7. Able to submit a transaction with wrong token but transaction confirmation screen shows the correct token name

Actual result

Network.Change.on.Send.Android.MP4

Expected result

Similar to desktop

Change.Network.mp4

Issue reproduces how often

Easy

Version/Channel Information:

• Can you reproduce this issue with the current Play Store version? Yes when 1.36.x is released
• Can you reproduce this issue with the current Play Store Beta version? Yes
• Can you reproduce this issue with the current Play Store Nightly version? Yes

Device details

• Install type (ARM, x86): ARM
• Device type (Phone, Tablet, Phablet): All
• Android version: All

Brave version

1.36.x

Website problems only

• Does the issue resolve itself when disabling Brave Shields? NA
• Does the issue resolve itself when disabling Brave Rewards?NA
• Is the issue reproducible on the latest version of Chrome? NA

Additional information

cc: @SergeyZhukovsky @wchen342

[srirambv]

Verification passed on the following devices running 1.38.107 x64 build

• Verified steps from issue description
• Verified changing network on send screen resets the input value
• Logged #22572 as a follow up to update the token as well

Oppo Reno 5 (Android 12)	Samsung Tab A (Android 10)
21136-ARM.mp4	21136-Tab.mp4