Fix/lv dsct issuance

[ziankork]

Changes

for https://github.com/sherlock-audit/2024-08-cork-protocol-judging/issues/119

List of Changes:

• [x] support pair with exchange rate != 1 on LV deposit
• [x] support pair with exchange rate != 1 on liquidating LP on new issuance fixed here
• [x] support pair with exchange rate != 1 on provide liquidity in vault
• support pair with exchange rate != 1 on DS flash swap (will be supported in the next iteration)
• [x] support pair with exchange rate != 1 when redeeming CT + DS on partial liquidation.