test: Add more test cases for Base58 parser (#5174)

---------
Co-authored-by: John Freeman <[email protected]>

Author: ximinez

include/xrpl/protocol/detail/b58_utils.h

@@ -177,7 +177,8 @@ inplace_bigint_div_rem(std::span<uint64_t> numerator, std::uint64_t divisor)
 [[nodiscard]] inline std::array<std::uint8_t, 10>
 b58_10_to_b58_be(std::uint64_t input)
 {
-    constexpr std::uint64_t B_58_10 = 430804206899405824;  // 58^10;
+    [[maybe_unused]] static constexpr std::uint64_t B_58_10 =
+        430804206899405824;  // 58^10;
     ASSERT(
         input < B_58_10,
         "ripple::b58_fast::detail::b58_10_to_b58_be : valid input");

src/test/protocol/types_test.cpp

@@ -28,8 +28,16 @@ struct types_test : public beast::unit_test::suite
     testAccountID()
     {
         auto const s = "rHb9CJAWyB4rj91VRWn96DkukG4bwdtyTh";
-        if (BEAST_EXPECT(parseBase58<AccountID>(s)))
-            BEAST_EXPECT(toBase58(*parseBase58<AccountID>(s)) == s);
+        if (auto const parsed = parseBase58<AccountID>(s); BEAST_EXPECT(parsed))
+        {
+            BEAST_EXPECT(toBase58(*parsed) == s);
+        }
+
+        {
+            auto const s =
+                "âabcd1rNxp4h8apvRis6mJf9Sh8C6iRxfrDWNâabcdAVâ\xc2\x80\xc2\x8f";
+            BEAST_EXPECT(!parseBase58<AccountID>(s));
+        }
     }
 
     void