MDL-65292 style: Fix all function declarations white space

This has been generated running the following Sniffs, all
them part of the Moodle's CodeSniffer standard:
- PSR12.Functions.ReturnTypeDeclaration
- PSR12.Functions.NullableTypeDeclaration
- moodle.Methods.MethodDeclarationSpacing
- Squiz.Whitespace.ScopeKeywordSpacing

All them are, exclusively, about correct spacing, so the changes
are, all them, only white space changes.

Only exceptions to the above are 3 changes what were setting the
return type in a new line, and, when that happens, the closing
parenthesis (bracket) has to go to the same line than the colon.

lib/outputrenderers.php

@@ -5190,7 +5190,7 @@ EOD;
      * @param  string $estimate time remaining message
      * @return string ascii fragment
      */
-    public function render_progress_bar_update(string $id, float $percent, string $msg, string $estimate) : string {
+    public function render_progress_bar_update(string $id, float $percent, string $msg, string $estimate): string {
         return html_writer::script(js_writer::function_call('updateProgressBar', [
             $id,
             round($percent, 1),
@@ -5474,7 +5474,7 @@ class core_renderer_cli extends core_renderer {
      * @param  string $estimate time remaining message
      * @return string ascii fragment
      */
-    public function render_progress_bar_update(string $id, float $percent, string $msg, string $estimate) : string {
+    public function render_progress_bar_update(string $id, float $percent, string $msg, string $estimate): string {
         $size = 55; // The width of the progress bar in chars.
         $ascii = '';