scoreboard cache column nullable true

@@ -57,29 +57,45 @@ class ScoreCache
 ])]
 private int $runtime_restricted = 0;
 
-#[ORM\Column(options: [
-'comment' => 'Max optscore (restricted audience)',
-'default' => 0,
-])]
-private float $optscore_max_restricted = 0;
+#[ORM\Column(
+type: 'float',
+nullable: true,
+options: [
+'comment' => 'Max optscore (restricted audience)',
+'default' => 0,
+]
+)]
+private ?float $optscore_max_restricted = null;
 
-#[ORM\Column(options: [
-'comment' => 'Max optscore (public audience)',
-'default' => 0,
-])]
-private float $optscore_max_public = 0;
+#[ORM\Column(
+type: 'float',
+nullable: true,
+options: [
+'comment' => 'Max optscore (public audience)',
+'default' => 0,
+]
+)]
+private ?float $optscore_max_public = null;
 
-#[ORM\Column(options: [
-'comment' => 'Min optscore (restricted audience)',
-'default' => 0,
-])]
-private float $optscore_min_restricted = 0;
+#[ORM\Column(
+type: 'float',
+nullable: true,
+options: [
+'comment' => 'Min optscore (restricted audience)',
+'default' => 0,
+]
+)]
+private ?float $optscore_min_restricted = null;
 
-#[ORM\Column(options: [
-'comment' => 'Min optscore (public audience)',
-'default' => 0,
-])]
-private float $optscore_min_public = 0;
+#[ORM\Column(
+type: 'float',
+nullable: true,
+options: [
+'comment' => 'Min optscore (public audience)',
+'default' => 0,
+]
+)]
+private ?float $optscore_min_public = null;
 
 #[ORM\Column(options: [
 'comment' => 'Number of submissions made (public)',