ir output is not included in Standard JSON when requesting all outputs via *

[cameel]

Currently, when you request all outputs in Standard JSON with "outputSelection": {"*": {"*": ["*"]}, the ir and irOptimized outputs are not included.

This seems to be because the IR generation used to be considered experimental:

solidity/libsolidity/interface/StandardCompiler.cpp

Lines 191 to 196 in dabecb6

	else if (selectedArtifact == "*")
	{
	// "ir", "irOptimized" can only be matched by "*" if activated.
	if (experimental.count(_artifact) == 0 || _wildcardMatchesExperimental)
	return true;
	}

In 0.8.13 it became a stable feature, and I think that these outputs should have been added to * back then.