Reapply "More aggressive using of cache on engine settings changes" (#4736)

* Reapply "More aggressive using of cache on engine settings changes (#4691)" (#4729)

This reverts commit 3f1f40eeba.

* Add a utility to get all the current values from the settings object

* Use an XState selector to get the latest settings snapshot for WASM

---------

Co-authored-by: Frank Noirot <frank@kittycad.io>

src/lib/settings/settingsUtils.ts

@@ -286,6 +286,27 @@ export function getChangedSettingsAtLevel(
   return changedSettings
 }
 
+export function getAllCurrentSettings(
+  allSettings: typeof settings
+): SaveSettingsPayload {
+  const currentSettings = {} as SaveSettingsPayload
+  Object.entries(allSettings).forEach(([category, settingsCategory]) => {
+    const categoryKey = category as keyof typeof settings
+    Object.entries(settingsCategory).forEach(
+      ([setting, settingValue]: [string, Setting]) => {
+        const settingKey =
+          setting as keyof (typeof settings)[typeof categoryKey]
+        currentSettings[categoryKey] = {
+          ...currentSettings[categoryKey],
+          [settingKey]: settingValue.current,
+        }
+      }
+    )
+  })
+
+  return currentSettings
+}
+
 export function setSettingsAtLevel(
   allSettings: typeof settings,
   level: SettingsLevel,