[Fix][Sherlock M-4] Add comment that Perennial does not support 0-value payoffs

[arjun-io]

No description provided.

[github-actions]

Unit Test Coverage Report

Coverage after merging arjun/0-price-comment into dev2 will be

53.92%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
packages/perennial/contracts/collateral
Collateral.sol	93.57%	85%	100%	100%	110, 113, 236, 53, 57, 86, 91–93
packages/perennial/contracts/collateral/types
OptimisticLedger.sol	100%	100%	100%	100%
packages/perennial/contracts/controller
Controller.sol	100%	100%	100%	100%
UControllerProvider.sol	84.62%	81.25%	87.50%	86.67%	33, 54, 54, 54, 56
packages/perennial/contracts/incentivizer
Incentivizer.sol	95.80%	89.66%	100%	100%	140, 153, 166, 185, 42, 83
packages/perennial/contracts/incentivizer/types
ProductManager.sol	100%	100%	100%	100%
Program.sol	100%	100%	100%	100%
packages/perennial/contracts/interfaces
ICollateral.sol	100%	100%	100%	100%
IContractPayoffProvider.sol	100%	100%	100%	100%
IController.sol	100%	100%	100%	100%
IIncentivizer.sol	100%	100%	100%	100%
IMultiInvoker.sol	100%	100%	100%	100%
IMultiInvokerRollup.sol	100%	100%	100%	100%
IParamProvider.sol	100%	100%	100%	100%
IPayoffProvider.sol	100%	100%	100%	100%
IPerennialLens.sol	100%	100%	100%	100%
IProduct.sol	100%	100%	100%	100%
packages/perennial/contracts/interfaces/types
Accumulator.sol	60%	100%	60%	60%	30, 40
PackedAccumulator.sol	0%	100%	0%	0%	28
PackedPosition.sol	0%	100%	0%	0%	28
PayoffDefinition.sol	0%	0%	0%	0%	107, 111, 113–115, 121, 39, 39, 39, 42, 55–57, 60, 60, 60–61, 61, 65, 65, 65–66, 66, 79, 79, 79, 81, 94, 97
PendingFeeUpdates.sol	0%	0%	0%	0%	104, 108, 115, 34, 34, 34–36, 41, 51, 51, 51–53, 58, 68, 68, 68–70, 75, 80, 80, 80, 80, 80, 85–90
Position.sol	35.71%	0%	41.67%	41.67%	107, 126, 144, 144, 144, 156, 156, 156, 33, 42, 52
PrePosition.sol	0%	0%	0%	0%	112, 114, 119–120, 134–135, 135, 135, 40, 50–51, 61–62, 72–73, 83–84, 98
ProgramInfo.sol	100%	100%	100%	100%
packages/perennial/contracts/lens
PerennialLens.sol	0%	0%	0%	0%	103, 103, 106–116, 133, 142, 151–160, 168, 168–169, 177, 177–178, 186, 186–187, 19, 195, 195–196, 205, 205–206, 214, 214–215, 226, 226, 229–231, 240, 240–242, 250, 250–252, 261, 261–263, 265–266, 27, 274, 274–275, 292, 292–293, 302, 302–303, 312, 312–313, 322, 322–323, 334, 334, 337, 348, 348, 351, 363, 363, 366, 375, 375–376, 387, 387, 39, 390, 399, 399, 40, 400–401, 401, 401, 403–404, 404, 404–405, 408–409, 41–42, 423, 423–425, 43, 437, 437, 44, 440, 442–448, 45, 464, 464–471, 490, 500, 513–514, 519–520, 54–56, 65, 65–77, 89–91
packages/perennial/contracts/multiinvoker
MultiInvoker.sol	92.77%	90.38%	95.24%	93.55%	156–157, 159, 372, 386, 386, 386–388, 390, 49
MultiInvokerRollup.sol	92.52%	90%	92.86%	93.55%	180, 187, 187–190, 192, 240, 250–251
packages/perennial/contracts/periphery
CoordinatorDelegatable.sol	98.46%	97.06%	100%	100%	99
packages/perennial/contracts/product
Product.sol	0%	0%	0%	0%	102–103, 106, 110, 113, 116, 116, 116, 118, 123, 127, 129, 136, 136, 136, 136–138, 155, 158, 158, 158, 161–163, 163, 167, 170, 174, 177, 177, 177, 179, 182, 188, 190, 198, 208, 208–209, 209–210, 210–211, 211–212, 212–213, 213–214, 214–215, 215–216, 216, 218, 22, 220–221, 223–224, 224, 224, 226–227, 235, 245, 245–246, 246–247, 247–248, 248–249, 249–250, 250, 252, 256, 258–259, 261–262, 262, 262, 264–265, 273, 283, 283–284, 284–285, 285–286, 286–287, 287–288, 288–289, 289–290, 290–291, 291–292, 292, 294, 296–297, 299–300, 300, 300, 302–303, 311, 321, 321–322, 322–323, 323–324, 324–325, 325–326, 326–327, 327, 329, 333, 335–336, 338–339, 339, 339, 341–342, 350, 350, 350, 350, 350, 350–352, 355–356, 359, 368, 378, 387, 396, 405, 414, 422, 432, 440, 450, 460, 469, 47, 47, 479, 48, 480–481, 49,