Remove deprecated models and mobx usage (react-query refactor) (#1934)

* Update login page to use service query

* Update modal to use session instead of store

* Move image sizes cache off store

* Update settings to no longer use store

* Update link-meta fetch to use agent instead of rootstore

* Remove deprecated resolveName()

* Delete deprecated link-metas cache

* Delete deprecated posts cache

* Delete all remaining mobx models, including the root store

* Strip out unused mobx observer wrappers

src/lib/async/revertible.ts

@@ -1,68 +0,0 @@
-import {runInAction} from 'mobx'
-import {deepObserve} from 'mobx-utils'
-import set from 'lodash.set'
-
-const ongoingActions = new Set<any>()
-
-/**
- * This is a TypeScript function that optimistically updates data on the client-side before sending a
- * request to the server and rolling back changes if the request fails.
- * @param {T} model - The object or record that needs to be updated optimistically.
- * @param preUpdate - `preUpdate` is a function that is called before the server update is executed. It
- * can be used to perform any necessary actions or updates on the model or UI before the server update
- * is initiated.
- * @param serverUpdate - `serverUpdate` is a function that returns a Promise representing the server
- * update operation. This function is called after the previous state of the model has been recorded
- * and the `preUpdate` function has been executed. If the server update is successful, the `postUpdate`
- * function is called with the result
- * @param [postUpdate] - `postUpdate` is an optional callback function that will be called after the
- * server update is successful. It takes in the response from the server update as its parameter. If
- * this parameter is not provided, nothing will happen after the server update.
- * @returns A Promise that resolves to `void`.
- */
-export const updateDataOptimistically = async <
-  T extends Record<string, any>,
-  U,
->(
-  model: T,
-  preUpdate: () => void,
-  serverUpdate: () => Promise<U>,
-  postUpdate?: (res: U) => void,
-): Promise<void> => {
-  if (ongoingActions.has(model)) {
-    return
-  }
-  ongoingActions.add(model)
-
-  const prevState: Map<string, any> = new Map<string, any>()
-  const dispose = deepObserve(model, (change, path) => {
-    if (change.observableKind === 'object') {
-      if (change.type === 'update') {
-        prevState.set(
-          [path, change.name].filter(Boolean).join('.'),
-          change.oldValue,
-        )
-      } else if (change.type === 'add') {
-        prevState.set([path, change.name].filter(Boolean).join('.'), undefined)
-      }
-    }
-  })
-  preUpdate()
-  dispose()
-
-  try {
-    const res = await serverUpdate()
-    runInAction(() => {
-      postUpdate?.(res)
-    })
-  } catch (error) {
-    runInAction(() => {
-      prevState.forEach((value, path) => {
-        set(model, path, value)
-      })
-    })
-    throw error
-  } finally {
-    ongoingActions.delete(model)
-  }
-}