Origin Password section shown for Add Solana Account

[StephenHeaps]

Description:

Json password field is shown when json is detected in private key field, but json import is disabled for Solana

Steps to Reproduce

1. Open Add Account view and select Solana
2. Enter any json (ex. {}) in the private key field
3. Observe Origin Password section now shown

Actual result:

Expected result:

Reproduces how often: [Easily reproduced, Intermittent Issue]

Brave Version:

• Can you reproduce this issue with the most recent build from TestFlight?
• Can you reproduce this issue with the previous version of the current build from TestFlight?
• Can you reproduce this issue with the current build from AppStore?

Device details:

Website problems only:

• did you check with Brave Shields down?
• did you check in Safari/Firefox (WkWebView-based browsers)?

Additional Information

[srirambv]

Verification passed on iPhone XR with iOS 16.3.1 running 1.49 (23.3.31.9)

• Verified Origin password section is not shown for adding Solana account
• Verified Origin password section is still shown for adding Ethereum account

7175-iPhone.XR.MP4

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Verification passed on iPad Pro with iOS 16.4 Beta 4 running 1.49 (23.3.31.9)

• Verified Origin password section is not shown for adding Solana account
• Verified Origin password section is still shown for adding Ethereum account

7175-iPad.Pro.MP4