PHPStan prepare exceptions (#6037)

Take advantage of
https://phpstan.org/blog/bring-your-exceptions-under-control

Minimum changes to pass `tooWideThrowType` and `implicitThrows`.

Revert some mistakes from:
https://github.com/FreshRSS/FreshRSS/pull/5504
Preparation needed before new PRs of the same type:
https://github.com/FreshRSS/FreshRSS/pull/5962

Fix several wrong PHPDocs and catches:

> Method ... has ...Exception in PHPDoc @throws tag but it's not thrown.

> Dead catch - ...Exception is never thrown in the try block.

1 files changed, 4 insertions, 1 deletions

diff --git a/app/install.php b/app/install.php
index 7703b3840..3ad69c071 100644
--- a/app/install.php
+++ b/app/install.php
@@ -508,7 +508,10 @@ function printStep1(): void {
 <?php
 }
 
-/* Select database & configuration */
+/**
+ * Select database & configuration
+ * @throws Minz_ConfigurationNamespaceException
+ */
 function printStep2(): void {
 	$system_default_config = FreshRSS_SystemConfiguration::get('default_system');
 	$s2 = checkStep2();