Sor fix unwrap rates internally

[brunoguerios]

Context

• unwrapRates scaling is now reflected on the float point representation within the DB and no longer needs to be applied in the SOR side as well

Example for ghUSDC on SONIC:

previous implementation:

• main token decimals -> 18
• underlying token decimals -> 6
• rate within DB -> 1.040198652125
• unwrapRate decimals -> 12 (i.e. diff between main and underlying decimals)
• rate within SOR -> 1040198652125

current implementation:

• main token decimals -> 18
• underlying token decimals -> 6
• rate within DB -> 0.000001040198652125
• unwrapRate decimals -> 18 (i.e. always 18 because diff between main and underlying is already factored in)
• rate within SOR -> 1040198652125

[changeset-bot]

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Latest commit: 2a2ea8a

The changes in this PR will be included in the next version bump.

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