Make CommitmentLevel constructors const (#27367)

make CommitmentLevel constructors const

sdk/src/commitment_config.rs

@@ -60,19 +60,19 @@ impl CommitmentConfig {
         }
     }
 
-    pub fn finalized() -> Self {
+    pub const fn finalized() -> Self {
         Self {
             commitment: CommitmentLevel::Finalized,
         }
     }
 
-    pub fn confirmed() -> Self {
+    pub const fn confirmed() -> Self {
         Self {
             commitment: CommitmentLevel::Confirmed,
         }
     }
 
-    pub fn processed() -> Self {
+    pub const fn processed() -> Self {
         Self {
             commitment: CommitmentLevel::Processed,
         }