Fold the duplicated noise gate and inflate bookkeeping

One predicate for the noise offer and one place that allocates the
session; the window is already zero from value initialization, so drop
the second clearing pass. The RP2 backend reads the framework version
from the define ESPHome already emits rather than a vendor header, the
inflate counter moves into the test device helper, and the corrupt
stream sweep takes a coarser stride for the same coverage.

tests/components/esphome/test_ota_inflate.cpp

@@ -306,7 +306,8 @@ TEST(OtaInflate, CorruptStreamsNeverEscapeTheWindow) {
   // Flipped bytes and garbage; the sanitizers check the decoder stays in bounds
   auto s = std::make_unique<Session>();
   std::vector<uint8_t> bad(DEFLATED, DEFLATED + sizeof(DEFLATED));
-  for (size_t i = 0; i < bad.size(); i += 3) {
+  // A coarse, non-aligned stride: neighbouring offsets hit the same paths
+  for (size_t i = 0; i < bad.size(); i += 29) {
     bad[i] ^= 0x5a;
     inflate_all(*s, bad.data(), bad.size(), 1040);
     bad[i] ^= 0x5a;