Fix some missing parens cases with OptionalMemberExpression in generator (#8751)

packages/babel-generator/src/node/parentheses.js

@@ -209,6 +209,7 @@ export function ConditionalExpression(node: Object, parent: Object): boolean {
     t.isBinary(parent) ||
     t.isConditionalExpression(parent, { test: node }) ||
     t.isAwaitExpression(parent) ||
+    t.isOptionalMemberExpression(parent) ||
     t.isTaggedTemplateExpression(parent) ||
     t.isTSTypeAssertion(parent) ||
     t.isTSAsExpression(parent)
@@ -219,6 +220,13 @@ export function ConditionalExpression(node: Object, parent: Object): boolean {
   return UnaryLike(node, parent);
 }
 
+export function OptionalMemberExpression(
+  node: Object,
+  parent: Object,
+): boolean {
+  return t.isCallExpression(parent) || t.isMemberExpression(parent);
+}
+
 export function AssignmentExpression(node: Object): boolean {
   if (t.isObjectPattern(node.left)) {
     return true;

packages/babel-generator/test/fixtures/types/Optional-MemberExpression/input.js

@@ -14,3 +14,7 @@ foo?.["bar"]?.foo;
 0.?.toString();
 0.5?.toString();
 1.000?.toString();
+
+(a?.b).c;
+(a ? b : c)?.d;
+(a?.b)()

packages/babel-generator/test/fixtures/types/Optional-MemberExpression/output.js

@@ -11,4 +11,7 @@ foo?.["bar"].foo;
 foo?.["bar"]?.foo;
 0.?.toString();
 0.5?.toString();
-1.000?.toString();
+1.000?.toString();
+(a?.b).c;
+(a ? b : c)?.d;
+(a?.b)();