Update to native token when network is changed on Send/Swap screen

[srirambv]

Description

Update to native token when network is changed on Send/Swap screen

Steps to reproduce

1. Install 1.38.107
2. Select Send tokens on Ethereum Mainnet
3. Select a preset value or manually enter
4. Select a different network say Polygon from the network dropdown
5. Because of brave/brave-core#12487, only input value is reset but the token still remains ETH instead of changing over to MATIC

Actual result

Native.Token.not.set.mp4

Expected result

Should switch to native token when network is changed and not just reset the input values

Issue reproduces how often

Easy

Version/Channel Information:

• Can you reproduce this issue with the current Play Store version? NA
• 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

1.38.107

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: @Pavneet-Sing @wchen342

[deeppandya]

@srirambv will verify and close if all okay.

[srirambv]

This is still an issue on current master (1.42.43)

[wchen342]

Haven't got a change to fix it yet, will get on it soon.

[Pavneet-Sing]

[Info]: This needs to be fixed on android Dapps panel.

https://community.brave.com/t/android-brave-crashes-when-adding-a-network-in-brave-wallet/408504

[aman-m1]

Also, would it be possible to show, may be through a toggle, the wallet extension icon all the time if user wanted to? And not just on a Dapp.

[Pavneet-Sing]

@aman-m1 Thanks for the suggestion. We hide the icon due to security concerns though will pass on your suggestion.

[jamesmudgett]

@aman-m1 yes we can add something

[Pavneet-Sing]

This implementation on Panel is still pending on panel #22572 (comment), since this has been closed so created a new issue to fix it on panel.
#24078

[srirambv]

Verification passed on the following devices running 1.43.74 x64 Beta build

• Verified steps from issue description
• Verified changing network resets the input value and updates the token to network's native token

Oppo Reno 5(Android 12)	Samsung Tab A (Android 10)
22572-ARM.mp4	22572-Tab.mp4