Add header-aside module position to the right of the logo

- New position renders inside .header-brand-wrap, right-aligned via
  margin-inline-start: auto on .container-header-aside
- CSS: .header-brand-wrap uses flexbox so logo stays left, aside floats right
- Registered in templateDetails.xml positions list
- Language strings added to both en-US and en-GB sys.ini files

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/index.php

@@ -379,7 +379,7 @@ $wa->useScript('user.js');         // js/user.js
 		<?php endif; ?>
 
 		<?php if ($this->params->get('brand', 1)) : ?>
-			<div class="grid-child">
+			<div class="grid-child header-brand-wrap">
 				<div class="navbar-brand">
 					<a class="brand-logo" href="<?php echo $this->baseurl; ?>/">
 						<?php echo $brandHtml; ?>
@@ -390,6 +390,11 @@ $wa->useScript('user.js');         // js/user.js
 						</div>
 					<?php endif; ?>
 				</div>
+				<?php if ($this->countModules('header-aside', true)) : ?>
+					<div class="container-header-aside">
+						<jdoc:include type="modules" name="header-aside" style="none" />
+					</div>
+				<?php endif; ?>
 			</div>
 		<?php endif; ?>