[Constraint] Add indentations to conj/disjunction printing.

This indents conj/disjuctions when they are printed as
 added/removed constraints.

Author: Amritpan Kaur

include/swift/Sema/ConstraintSystem.h

@@ -4426,7 +4426,7 @@ class ConstraintSystem {
       auto &log = llvm::errs();
       log.indent(solverState->getCurrentIndent() + 2);
       log << "(added constraint: ";
-      constraint->print(log, &getASTContext().SourceMgr);
+      constraint->print(log, &getASTContext().SourceMgr, solverState->getCurrentIndent() + 4);
       log << ")\n";
     }
 

lib/Sema/Constraint.cpp

@@ -359,6 +359,7 @@ void Constraint::print(llvm::raw_ostream &Out, SourceManager *sm, unsigned inden
 
     interleave(sortedConstraints,
                [&](Constraint *constraint) {
+                 Out.indent(indent);
                  if (constraint->isDisabled())
                    Out << ">  [disabled] ";
                  else if (constraint->isFavored())