Move Reset for wallet into BraveWalletService

[srirambv]

iOS version of brave/brave-browser#20346

Currently the ResetWallet function is not usable from iOS.
This changes it so you only need to call reset on BraveWalletService.
It also fixes a bug with reloading a tab when not needed for restoring a wallet seed phrase.

[srirambv]

Fixed with brave/brave-core#11754

[nuo-xu]

This can be verified through #4777

[srirambv]

Verification passed on iPhone 7+ with iOS 14.8.1 running 1.36 (22.2.23.20)

• Verified steps from issue description
• Verified reset wallet removes all settings (auto lock, biometric unlock etc)
• Verified reset wallet deleted the custom network that is added
• Verified reset wallet hides the wallet option in settings
• Verified reset works fine on a clean wallet install
• Verified reset wallet works on restored wallet
• Verified when reset is done via wallet menu, upon successful reset, brings up the onboarding modal
• Verified when reset is done via More menu-> Wallet -> Reset or via wallet, setting is hidden until user onboard's again

---

Verification passed on iPhone XR with iOS 15.3 running 1.36 (22.2.23.20)

• Verified steps from issue description
• Verified reset wallet removes all settings (auto lock, face unlock etc)
• Verified reset wallet deleted the custom network that is added
• Verified reset wallet hides the wallet option in settings
• Verified reset works fine on a clean wallet install
• Verified reset wallet works on restored wallet
• Verified when reset is done via wallet menu, upon successful reset, brings up the onboarding modal
• Verified when reset is done via More menu-> Wallet -> Reset or via wallet, setting is hidden until user onboard's again

---

Verification passed on iPad Pro with iOS 15.4 Beta running 1.36 (22.2.23.20)

• Verified steps from issue description
• Verified reset wallet removes all settings (auto lock, bio-metric unlock etc)
• Verified reset wallet deleted the custom network that is added
• Verified reset wallet hides the wallet option in settings
• Verified reset works fine on a clean wallet install
• Verified reset wallet works on restored wallet
• Verified when reset is done via wallet menu, upon successful reset, brings up the onboarding modal
• Verified when reset is done via More menu-> Wallet -> Reset or via wallet, setting is hidden until user onboard's again