BIT-2443: Fix crash caused by extra blank spaces in name

[david-livefront]

🎟️ Tracking

BIT-2443

📔 Objective

This PR fixes a crash when parsing initials that have extra blank spaces in them.

Stacktrace:

   Fatal Exception: java.util.NoSuchElementException: Char sequence is empty.
       at kotlin.text.StringsKt___StringsKt.first(_Strings.kt:76)
       at com.x8bit.bitwarden.ui.vault.feature.vault.util.AccountSummaryExtensionsKt._get_initials_$lambda$0(AccountSummaryExtensions.kt:25)
       at com.x8bit.bitwarden.ui.vault.feature.vault.util.AccountSummaryExtensionsKt.$r8$lambda$75K7JSwE63qgrtaNuTKqE1qCJyM()
       at com.x8bit.bitwarden.ui.vault.feature.vault.util.AccountSummaryExtensionsKt$$ExternalSyntheticLambda0.invoke(D8$$SyntheticClass)
       at kotlin.text.StringsKt__AppendableKt.appendElement(Appendable.kt:84)
       ...

⏰ Reminders before review

• Contributor guidelines followed
• All formatters and local linters executed and passed
• Written new unit and / or integration tests where applicable
• Used internationalization (i18n) for all UI strings
• CI builds passed
• Communicated to DevOps any deployment requirements
• Updated any necessary documentation or informed the documentation team

🦮 Reviewer guidelines

• 👍 (:+1:) or similar for great changes
• 📝 (:memo:) or ℹ️ (:information_source:) for notes or general info
• ❓ (:question:) for questions
• 🤔 (:thinking:) or 💭 (:thought_balloon:) for more open inquiry that's not quite a confirmed issue and could potentially benefit from discussion
• 🎨 (:art:) for suggestions / improvements
• ❌ (:x:) or ⚠️ (:warning:) for more significant problems or concerns needing attention
• 🌱 (:seedling:) or ♻️ (:recycle:) for future improvements or indications of technical debt
• ⛏ (:pick:) for minor or nitpick changes

[github-actions[bot]]

Checkmarx One – Scan Summary & Details – bafd86e5-11bc-4010-969f-665e2d8db342

No New Or Fixed Issues Found

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 85.58%. Comparing base (bb6a7af) to head (933f9ec).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #3395 +/- ## ======================================= Coverage 85.58% 85.58% ======================================= Files 356 356 Lines 28939 28939 Branches 5040 5040 ======================================= Hits 24768 24768 Misses 2123 2123 Partials 2048 2048 ```

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[david-livefront]

Thanks @brian-livefront