fix: disable optimizations when --decode-internal is set

[zerosnacks]

Motivation

Closes: #8986
Closes: #8840, added warning that optimizations are disabled to both coverage and test

Solution

Automatically disables optimization settings when running with the --decode-internal flag (incl. flamecharts / flamegraphs), with same settings used by forge coverage

Now emits a warning that the optimizer is disabled

When using --via-ir it switches to use the --ir-minimum flag, also emitting a warning

cc @klkvr

[klkvr]

#8986 looks like a source map parsing issue? disabling optimizer on --decode-internal will cause recompilation and might result in stack too deep errors, this makes flag less user-friendly

we should start with fixing source map parser to not throw this error

[zerosnacks]

Disabling optimizer on --decode-internal will cause recompilation and might result in stack too deep errors, this makes flag less user-friendly

Good point

Closing in favor of investigating #8986 (comment) more deeply and tackle this at the root