Migrate ABSL_ARRAYSIZE()/arraysize() to std::size(), std::extent_v, or other alternatives where possible

Tested:
    TAP --sample ran all affected tests and none failed
    http://test/OCL:965669212:BASE:965661931:1786926294789:a1797629
PiperOrigin-RevId: 965682920

quiche/http2/hpack/huffman/hpack_huffman_decoder_test.cc

diff --git a/quiche/http2/hpack/huffman/hpack_huffman_decoder_test.cc b/quiche/http2/hpack/huffman/hpack_huffman_decoder_test.cc
index c0f4c40..0492895 100644
--- a/quiche/http2/hpack/huffman/hpack_huffman_decoder_test.cc
+++ b/quiche/http2/hpack/huffman/hpack_huffman_decoder_test.cc
@@ -208,7 +208,7 @@
       "25a849e95bb8e8b4bf",
       "custom-value",
   };
-  for (size_t i = 0; i != ABSL_ARRAYSIZE(test_table); i += 2) {
+  for (size_t i = 0; i != std::size(test_table); i += 2) {
     std::string huffman_encoded;
     ASSERT_TRUE(absl::HexStringToBytes(test_table[i], &huffman_encoded));
     const std::string& plain_string(test_table[i + 1]);
@@ -239,7 +239,7 @@
       "03ed4ee5b1063d5007",
       "foo=ASDJKHQKBZXOQWEOPIUAXQWEOIU; max-age=3600; version=1",
   };
-  for (size_t i = 0; i != ABSL_ARRAYSIZE(test_table); i += 2) {
+  for (size_t i = 0; i != std::size(test_table); i += 2) {
     std::string huffman_encoded;
     ASSERT_TRUE(absl::HexStringToBytes(test_table[i], &huffman_encoded));
     const std::string& plain_string(test_table[i + 1]);