php 8 compatibility TypeError: count(): Argument #1 ($value) must be of type Countable|array [#3398569]

Another PHP 8 compatibility issue, this issue used to be a warning prior to PHP 8, now it is a full blown error that breaks `/admin/config/search/apachesolr/settings/solr/index` page

The error:
TypeError: count(): Argument #1 ($value) must be of type Countable|array, bool given in apachesolr_search_page_list_blocks() (line 165 of /var/www/html/web/sites/all/modules/apachesolr/apachesolr_search.admin.inc).

Comment	File	Size	Author
#2	php-8-compatibility-typeerror-count-argument-1-value-must-be-of-type-3398569-2.patch	611 bytes	jordan.jamous

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3398569-php-8-compatibility changes, plain diff MR !3
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