[BUGFIX] Fix middleware order for forced indexing (#1018)

History:
--------
Because of a problem with lochmueller/staticfilecache,
crawler issue #642
changed the middleware loading order to execute crawler after static file cache.
(commit 0f7cb6a)

The source of the problem was that the crawler CrawlerInitialization middleware
overwrote the HTTP response that was generated by TYPO3.

Since commit 8a9b896
(issue #837)
the HTTP response is not destroyed/overwritten by crawler anymore
but moved into a HTTP header "X-T3Crawler-Meta".
The loading order does not influence compatibility with
static file cache anymore.

Bug
---
The changed loading order in the bug fix led to the problem that
> indexed_search:TypoScriptFrontendHook
was executed before
> crawler:CrawlerInitialization

But CrawlerInitialization must be run before TypoScriptFrontendHook
because it loads request data that are needed by indexed_search.

This led to bug #729
- forced reindexing by the crawler did not work anymore if the
page was already in cache.

Solution
--------
Restore the HTTP middleware loading order as it was before
the fix for #642, so that the code path is again:

1. crawler:FrontendUserAuthenticator
   (aoe/crawler/authentication)

2. crawler:CrawlerInitialization
   (aoe/crawler/initialization)

3. indexed_search:TypoScriptFrontendHook
   (called by typo3/cms-frontend/prepare-tsfe-rendering)

Resolves: #729

CHANGELOG.md

@@ -25,6 +25,7 @@
 ### Fixed
 * If indexed_search is installed activate procInstructions for indexed_search
 * Prevent undefined array key uid and username in FrontendUserAuthentication
+* Fix loading middleware order to make forced indexing work again [@cweiske](https://github.com/cweiske)
 
 ### Deprecated
 #### Classes

Configuration/RequestMiddlewares.php

@@ -14,7 +14,7 @@
         ],
         'aoe/crawler/initialization' => [
             'target' => CrawlerInitialization::class,
-            'before' => ['typo3/cms-core/normalizedParams'],
+            'before' => ['typo3/cms-frontend/prepare-tsfe-rendering'],
         ],
     ],
 ];