[MC] Maintain MCRelaxAll after reset() (#94945)

RelaxAll was set in the constructor, but cleared after reset().

Author: aengelke

llvm/lib/MC/MCObjectStreamer.cpp

@@ -175,8 +175,11 @@ void MCObjectStreamer::emitAbsoluteSymbolDiffAsULEB128(const MCSymbol *Hi,
 }
 
 void MCObjectStreamer::reset() {
-  if (Assembler)
+  if (Assembler) {
     Assembler->reset();
+    if (getContext().getTargetOptions())
+      Assembler->setRelaxAll(getContext().getTargetOptions()->MCRelaxAll);
+  }
   CurInsertionPoint = MCSection::iterator();
   EmitEHFrame = true;
   EmitDebugFrame = false;