Fix byte limits in new smart retry tests for proper interruption handling

The new tests were failing with 0 bytes returned because the default MockPartialResponsePolicy
byte limit (200 bytes) was too small for 4KB data with 1KB segments. Updated tests to use
appropriate byte limits:

- interruptWithDataIntact: 1200 bytes (ensures first 1KB segment completes)
- interruptMultipleTimesWithDataIntact: 800 bytes (enables 3 interrupts with 4KB data)
- interruptAndVerifyProperDecode: 1000 bytes (enables 2 interrupts with 4KB data)

With 4KB data and 1KB segments, encoded size is ~4189 bytes:
- Message header: 13 bytes
- Each segment: 10 (header) + 1024 (data) + 8 (CRC) = 1042 bytes
- Message CRC: 8 bytes
- Total: 13 + (4 * 1042) + 8 = 4189 bytes

These byte limits ensure segments complete before interruption, enabling proper smart
retry from segment boundaries.

Co-authored-by: gunjansingh-msft <[email protected]>

Author: Copilot

sdk/storage/azure-storage-blob/src/test/java/com/azure/storage/blob/BlobMessageDecoderDownloadTests.java

@@ -518,7 +518,8 @@ public void interruptWithDataIntact() throws IOException {
 
         // Create a policy that will simulate 1 network interruption at a specific position
         // Interrupt after first segment completes to test smart retry from segment boundary
-        MockPartialResponsePolicy mockPolicy = new MockPartialResponsePolicy(1);
+        // Use 1200 bytes to ensure at least one 1KB segment completes
+        MockPartialResponsePolicy mockPolicy = new MockPartialResponsePolicy(1, 1200);
 
         // Upload the encoded data
         bc.upload(input, null, true).block();
@@ -562,7 +563,8 @@ public void interruptMultipleTimesWithDataIntact() throws IOException {
         Flux<ByteBuffer> input = Flux.just(encodedData);
 
         // Create a policy that will simulate 3 network interruptions
-        MockPartialResponsePolicy mockPolicy = new MockPartialResponsePolicy(3);
+        // Use 800 bytes for subsequent interruptions to get 3 interrupts with 4KB data + 1KB segments
+        MockPartialResponsePolicy mockPolicy = new MockPartialResponsePolicy(3, 800);
 
         // Upload the encoded data
         bc.upload(input, null, true).block();
@@ -667,7 +669,8 @@ public void interruptAndVerifyProperDecode() throws IOException {
         Flux<ByteBuffer> input = Flux.just(encodedData);
 
         // Create a policy with 2 interruptions to test multi-step decode after retries
-        MockPartialResponsePolicy mockPolicy = new MockPartialResponsePolicy(2);
+        // Use 1000 bytes to get 2 interruptions with 4KB data + 1KB segments
+        MockPartialResponsePolicy mockPolicy = new MockPartialResponsePolicy(2, 1000);
 
         // Upload the encoded data
         bc.upload(input, null, true).block();