fix(bridge): lower account level requirement from level 2 to level > 0

[heyolaniran]

Summary

• Relaxes the bridge account level gate from level < 2 (Pro) to level <= 0 (any non-zero level) across all bridge operations
• Updates the BridgeAccountLevelError message to reflect the new requirement (Level 1+)

Files changed

• bridge-add-external-account.ts — mutation level check
• bridge-create-virtual-account.ts — mutation level check
• bridge-initiate-kyc.ts — mutation level check
• bridge-initiate-withdrawal.ts — mutation level check
• bridge-virtual-account.ts — query level check
• src/services/bridge/errors.ts — updated error message

Test plan

• Verify a Level 1 account can now access bridge operations
• Verify a Level 0 account is still blocked with BridgeAccountLevelError