Fixed issue with damage reduction imporoperly displaying in the Mechbay

[Vek17]

The durability stat was incorrectly handling damage reduction resulting in it decreasing both the displayed amount of armor and the durability value in the tooltip.

Additionally damage reduction was not being displayed at all.

These changes now allow damage reduction effects on the mech to properly increase the displayed durability, and displays the damage reduction % as part of the durability breakdown. Damage reduction no longer modifies the displayed armor value.

[CptMoore]

Suggested change

	tooltipData.dataList.Add("<u>" + Strings.T("Damage Reduction") + "</u>", Strings.T($"{value * 100} %"));
	tooltipData.dataList.Add("<u>" + Strings.T("Damage Reduction") + "</u>", Strings.T("{0} %", percent));

going through string.T formatting should in theory allow internationalization on the string.. in this case the percent sign and the whitepace in between...

[Vek17]

Doing it this way

var reduction = 1 - DamageReductionMultiplierAll(mechDef);
var percent = (int)(reduction * 100);
tooltipData.dataList.Add("<u>" + Strings.T("Damage Reduction") + "</u>", Strings.T("{0} %", percent));

Results in floating point errors with some reduction values that will cause incorrect reduction to display (EX: in a 0.8 damage reduction test I had this display as 19% damage reduction). I recommend not doing an integer conversion and using standard percent numeric formatting to handle this instead.

var reduction = 1 - DamageReductionMultiplierAll(mechDef);
tooltipData.dataList.Add("<u>" + Strings.T("Damage Reduction") + "</u>", Strings.T("{0:P0}", reduction));

[CptMoore]

Looks much better, implement that, squash everything and I'll merge

thx