MJIT: Check if self is T_OBJECT before opt_pc jump #7774
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This is a patch for
ruby_3_2branch.The
opt_pcjump wrongly skips theT_OBJECTcheck for ivars, so instance variables are broken for non-T_OBJECTobjects when the method has optional arguments. This PR fixes it by checkingT_OBJECTfirst.[Bug #19623]