Linx TVL does not include all tokens

[raduciobanu22]

WBTC which is used as collateral in a pool is ignored
We have 2 pools: ALPH / USDT and WBTC / USDT.
Locally I ran node test.js projects/linx/index.js and these are the results:

--- alephium ---
ALPH                      291.14 k
USDTeth                   2.56 k
Total: 293.70 k

--- alephium-borrowed ---
USDTeth                   57.12 k
Total: 57.12 k

--- tvl ---
ALPH                      291.14 k
USDTeth                   2.56 k
Total: 293.70 k

I'd expect to see WBTC there as well.

[Bruno12221]

Fixed in PR #18049

The fix adds a fallback for the Linx WBTC collateral token so it is counted with coingecko pricing when the Alephium token price is null

node test.js projects/linx/index.js
Output

--- alephium-borrowed ---
USDTeth                   60.76 k
Total: 60.76 k 

--- alephium ---
ALPH                      306.35 k
WBTC                      5.76 k
USDTeth                   3.47 k
Total: 315.58 k 

--- borrowed ---
USDTeth                   60.76 k
Total: 60.76 k 

--- tvl ---
ALPH                      306.35 k
WBTC                      5.76 k
USDTeth                   3.47 k
Total: 315.58 k