fix: update branch card class and button logic to correctly handle active and selected branches

gitbutler-ui/src/lib/components/BranchCard.svelte

@@ -129,7 +129,11 @@
 </script>
 
 <div class="branch-card-wrapper">
-	<div class="branch-card" data-tauri-drag-region class:target-branch={branch.selectedForChanges}>
+	<div
+		class="branch-card"
+		data-tauri-drag-region
+		class:target-branch={branch.active && branch.selectedForChanges}
+	>
 		<div
 			bind:this={rsViewport}
 			style:width={`${laneWidth || $defaultBranchWidthRem}rem`}

gitbutler-ui/src/lib/components/BranchHeader.svelte

@@ -236,6 +236,7 @@
 		</div>
 		<div class="header__actions">
 			<div class="header__buttons">
+				{#if branch.active}
 					{#if branch.selectedForChanges}
 						<Button
 							help="New changes will land here"
@@ -257,6 +258,7 @@
 							Set as default
 						</Button>
 					{/if}
+				{/if}
 				<!-- We can't show the merge button until we've waited for checks
 
                 We use a octokit.checks.listForRef to find checks running for a PR, but right after

gitbutler-ui/src/lib/components/BranchLane.svelte

@@ -65,7 +65,7 @@
 <div
 	class="wrapper"
 	data-tauri-drag-region
-	class:target-branch={branch.selectedForChanges}
+	class:target-branch={branch.active && branch.selectedForChanges}
 	class:selected
 >
 	<BranchCard