fix: Download SRS using one canonical URL across the codebase (#1748)

resolves #1747 

# Checklist:
Remove the checklist to signal you've completed it. Enable auto-merge if
the PR is ready to merge.
- [ ] If the pull request requires a cryptography review (e.g.
cryptographic algorithm implementations) I have added the 'crypto' tag.
- [ ] I have reviewed my diff in github, line by line and removed
unexpected formatting changes, testing logs, or commented-out code.
- [ ] Every change is related to the PR description.
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this pull request to relevant issues (if any exist).

cpp/src/barretenberg/bb/get_crs.hpp

@@ -20,10 +20,10 @@ inline std::vector<uint8_t> download_g1_data(size_t num_points)
 
 inline std::vector<uint8_t> download_g2_data()
 {
-    size_t g2_start = 28 + 5040000 * 64;
+    size_t g2_start = 28 + 5040001 * 64;
     size_t g2_end = g2_start + 128 - 1;
     std::string command = "curl -s -H \"Range: bytes=" + std::to_string(g2_start) + "-" + std::to_string(g2_end) +
-                          "\" 'https://aztec-ignition.s3.amazonaws.com/MAIN%20IGNITION/sealed/transcript00.dat'";
+                          "\" 'https://aztec-ignition.s3.amazonaws.com/MAIN%20IGNITION/monomial/transcript00.dat'";
 
     return exec_pipe(command);
 }

ts/src/crs/net_crs.ts

@@ -38,10 +38,10 @@ export class NetCrs {
    * Download the G2 points data.
    */
   async downloadG2Data() {
-    const g2Start = 28 + 5040000 * 64;
+    const g2Start = 28 + 5040001 * 64;
     const g2End = g2Start + 128 - 1;
 
-    const response2 = await fetch('https://aztec-ignition.s3.amazonaws.com/MAIN%20IGNITION/sealed/transcript00.dat', {
+    const response2 = await fetch('https://aztec-ignition.s3.amazonaws.com/MAIN%20IGNITION/monomial/transcript00.dat', {
       headers: {
         Range: `bytes=${g2Start}-${g2End}`,
       },