fix(core): remove debug code that runs in production builds

- Wrap window.props assignment in debug.jsx with NODE_ENV check
  so it only executes in development builds
- Remove debug console.log from ExamplesSelect default onSelect prop
  (marked with FIXME: remove before merging to master)
- Remove debug console.log from ExamplesSelectValueRetainer default
  onSelect and updateValue props
- Replace debug callbacks with no-op functions

Fixes #10521

Author: yogeshwaran-c

src/core/components/debug.jsx

@@ -23,7 +23,9 @@ export default class Debug extends React.Component {
 
     let { getState, getComponent } = this.props
 
-    window.props = this.props
+    if (process.env.NODE_ENV === "development") {
+      window.props = this.props
+    }
 
     const Collapse = getComponent("Collapse")
 

src/core/components/examples-select-value-retainer.jsx

@@ -52,18 +52,8 @@ export default class ExamplesSelectValueRetainer extends React.PureComponent {
     setRetainRequestBodyValueFlag: () => {
       // NOOP
     },
-    onSelect: (...args) =>
-      // eslint-disable-next-line no-console
-      console.log(
-        "ExamplesSelectValueRetainer: no `onSelect` function was provided",
-        ...args
-      ),
-    updateValue: (...args) =>
-      // eslint-disable-next-line no-console
-      console.log(
-        "ExamplesSelectValueRetainer: no `updateValue` function was provided",
-        ...args
-      ),
+    onSelect: () => {},
+    updateValue: () => {},
   }
 
   constructor(props) {

src/core/components/examples-select.jsx

@@ -19,13 +19,7 @@ export default class ExamplesSelect extends React.PureComponent {
 
   static defaultProps = {
     examples: Map({}),
-    onSelect: (...args) =>
-      // eslint-disable-next-line no-console
-      console.log(
-        // FIXME: remove before merging to master...
-        `DEBUG: ExamplesSelect was not given an onSelect callback`,
-        ...args
-      ),
+    onSelect: () => {},
     currentExampleKey: null,
     showLabels: true,
   }