Implement new Sync State UI on Balance tab

[Dianaaiym]

Show sync percentage on token icon when state = "Blocks Remaining"

• Spinner remains visible for all sync states.
• For state = “Blocks Remaining: X” only:
• Display percentage (e.g. 23%) overlay on the coin icon.
• Update percentage in real time based on progress.
• When syncing is complete → hide spinner and percentage.
• On sync error → show red error icon instead of spinner.

EVM, Tron, Stellar

States:
🟡 Syncing... - shown during background sync.

Visuals:

• Spinner (no percentage).
• No “Blocks Remaining” text or progress ring.

Bitcoin, Bitcoin Cash, Dash, Litecoin, eCash

States:
🟡 Searching transactions... - scanning for related UTXOs.
🟢 Blocks Remaining - showing remaining block count (e.g., Blocks Remaining – 43).

Visuals:

• Spinner only for “Searching transactions...”.
• Spinner + percentage ring for “Blocks Remaining: X”.
• Percentage updates in real time based on synced blocks.

Monero (XMR)
States:

🟡 Connecting... - establishing node connection.
🟢 Blocks Remaining - syncing in progress with known block count.

Zcash (ZEC)

States:
🟡 Connecting... - initializing sync session.
🟠 Downloading... - downloading sampling data or checkpoints.
🟢 Blocks Remaining - showing block sync progress.