Missing Translation for `Secrete Backup Phrase` screen content

[GeetaSarvadnya]

Description

Found while testing #5686
Missing Translation for Secrete Backup Phrase screen content

Steps to Reproduce

1. Set device locale to Spanish
2. Create a new profile and launch Crypto wallet
3. Navigate to Secrete Backup Phrase
4. Secrete Backup Phrase content isn't translated to Spanish

Actual result:

Missing Translation for Secrete Backup Phrase screen content

Expected result:

Secrete Backup Phrase content should be translated to Spanish

Reproduces how often:

Always

Brave version (brave://version info)

Brave	0.69.132 Chromium: 77.0.3865.90 (Official Build) (64-bit)
Revision	58c425ba843df2918d9d4b409331972646c393dd-refs/branch-heads/3865@{#830}
OS	Windows 10 OS Version 1803 (Build 17134.1006)

Version/Channel Information:

• Can you reproduce this issue with the current release? NA
• Can you reproduce this issue with the beta channel? Yes
• Can you reproduce this issue with the dev channel? Yes
• Can you reproduce this issue with the nightly channel? Yes

Other Additional Information:

• 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

Miscellaneous Information:

cc: @bbondy @kjozwiak

[GeetaSarvadnya]

Missing translation for Backup now button - It's not translated to Spanish

[kjozwiak]

@bbondy possible that MM missing some translations on Spanish?