Fuzz: "==5859== ERROR: libFuzzer: timeout after 1564 seconds" (ubuntu-latest)

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Branch: * main

commit bab23b9cdb47e8f853731a619eea0cbfe15cb3a2
Author: Dhairya Patel <124895699+HABER7789@users.noreply.github.com>
Date:   Mon Jul 20 09:15:08 2026 -0700

    fix deprecated assign update expression for nested expressions (#3482)
    
    ## Fix deprecated assign-update quick fix for nested expressions
    
    The `DeprecatedAssignUpdateExpr` quick fix flattens nested `w/=` updates
    by matching index source text. That's unsafe for impure indices: the
    flattened form evaluates the index fewer times than the original,
    changing behavior.
    
    Now it only merges levels where the shared indices are pure, otherwise
    falling back to the safe single-level rewrite. The assigned value is
    never required to be pure (it's evaluated once either way).
    
    Example (`NextIndex()` returns a different value each call):
    
    ```text
    a w/= NextIndex() <- (a[NextIndex()] w/ 1 <- 7)
    
    before →  a[NextIndex()][1] = 7                     // runs NextIndex() once, wrong
    after  →  a[NextIndex()] = a[NextIndex()] w/ 1 <- 7 // both calls preserved
    ```
    
    Pure cases still flatten fully, e.g. `a w/= 0 <- (a[0] w/ 1 <- 7)` →
    `a[0][1] = 7`.
    
    ---------
    
    Co-authored-by: HABER7789 <dhaipatel@microsoft.com>

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• Workflow Agent System Info: ubuntu-latest: Linux runnervm3jd5f 6.17.0-1020-azure #20~24.04.1-Ubuntu SMP Fri Jun 19 20:09:14 UTC 2026 x86_64 x86_64 x86_64 GNU/Linux.