Improve sidebar labels in Embedded Wallets SDK usage sections

[bgravenorst]

Problem

Sidebar labels in the usage/ sections across Embedded Wallets SDK platforms use raw method
names (camelCase API identifiers) as navigation labels. These are ambiguous and not
self-explanatory for readers scanning the sidebar.

Example: iOS SDK usage/ section

Current sidebar label	Issue
connectTo	Doesn't describe what the user achieves
request	Ambiguous — request what?
enableMFA	Code identifier, not a human-readable label
manageMFA	Same
getUserInfo	Same
getPrivateKey	Same
getEd25519PrivateKey	Same
showWalletUI	Same
logout	Same

Suggested approach

Replace code-style sidebar labels with descriptive, human-readable labels that describe the
action or outcome. For example:

Current	Suggested
connectTo	Sign in a user
request	Send requests
enableMFA	Enable MFA
manageMFA	Manage MFA
getUserInfo	Get user info
getPrivateKey	Get private key
getEd25519PrivateKey	Get Ed25519 private key
showWalletUI	Show wallet UI
logout	Sign out

Scope

This affects usage/ sections across all SDK platforms:
iOS, Android, React Native, Flutter, Unity, Unreal, JS, Vue, React.