Replace Liquidity (USD) with TVL (USD) on token index views

[kenkunz]

See epic #784

Goal

As an investor, I want token index view to display "TVL (USD)" instead of "Liquidity (USD)", and to be sorted by TVL:desc by default, so that I can compare a common metric across tokens.

Backend dependencies

• tradingstrategy-ai/oracle#474
• tradingstrategy-ai/backend#226

Acceptance criteria

1. "Liquidity (USD)" replaced by "TVL (USD)" on /[chain]/tokens index page
2. Tokens table sorted by TVL:desc by default on /[chain]/tokens index page