Adds comments related to the public RPC endpoints (solana-labs#22797)

* Adds comments related to the public RPC endpoints

* Update docs/src/cluster/rpc-endpoints.md

Co-authored-by: Michael Vines <mvines@gmail.com>

Co-authored-by: Brian Long <bl@triton.one>
Co-authored-by: Tyera Eulberg <teulberg@gmail.com>
Co-authored-by: Michael Vines <mvines@gmail.com>

v1.9: Enforce tx metadata upload to bigtable (solana-labs#23212)

* Enforce tx metadata upload with static types (solana-labs#23028)

* resolve conflicts

* fix test

Skip adding builtins if they will be removed (backport solana-labs#23233

) (solana-labs#23241)

* Skip adding builtins if they will be removed (solana-labs#23233)

* Add failing test for precompile transition

* Skip adding builtins if they will be removed

* cargo clean

* nits

* fix abi check

* remove workaround

Co-authored-by: Jack May <jack@solana.com>
(cherry picked from commit 1719d23)

# Conflicts:
#	runtime/src/bank.rs
#	runtime/src/builtins.rs

* resolve conflicts

Co-authored-by: Justin Starry <justin@solana.com>
Co-authored-by: Jack May <jack@solana.com>

Add --locked to spl-token-cli install (solana-labs#23223) (solana-lab…

…s#23224)

(cherry picked from commit c696944)

Co-authored-by: Will Hickey <will.hickey@solana.com>

accounts_index: Add SPL Token account indexing for token-2022 accounts (

solana-labs#23043) (solana-labs#23203)

(cherry picked from commit a102453)

Co-authored-by: Michael Vines <mvines@gmail.com>

Fix snap server (backport solana-labs#23140) (solana-labs#23193)

* test-validator: use `JsonRpcConfig::default_for_test` for consistency

(cherry picked from commit f711825)

# Conflicts:
#	core/src/test_validator.rs

* rpc: make `getGenesisHash` part of minimal api

(cherry picked from commit 4213ece)

# Conflicts:
#	rpc/src/rpc.rs

* rpc: genericize client constructors

(cherry picked from commit aeda274)

# Conflicts:
#	client/src/http_sender.rs

* validator: invert vote account sanity check arg

(cherry picked from commit de30699)

# Conflicts:
#	validator/src/bootstrap.rs
#	validator/src/main.rs

Co-authored-by: Trent Nelson <trent@solana.com>

uses sendmmsg in streamer (backport solana-labs#23062) (solana-labs#2…

…3080)

* uses sendmmsg in streamer (solana-labs#23062)

packet::send_to sends packets one by one:
https://github.com/solana-labs/solana/blob/9213fcb11/streamer/src/packet.rs#L63-L75

sendmmsg uses a single system call for multiple messages:
https://github.com/solana-labs/solana/blob/9213fcb11/streamer/src/sendmmsg.rs#L94

(cherry picked from commit c078ca3)

# Conflicts:
#	streamer/src/streamer.rs

* removes mergify merge conflicts

Co-authored-by: behzad nouri <behzadnouri@gmail.com>

v1.9: Impl get_/set_return_data syscalls for ProgramTest (solana-labs…

…#22652)

* Remove &mut self from set_return_data

* Impl get_/set_return_data for program-test SyscallStubs

* Add return_data program-test

Handle already discarded packets in discard_excess_packets (solana-la…

…bs#22594) (solana-labs#22634)

(cherry picked from commit 38b02bb)

Co-authored-by: sakridge <sakridge@gmail.com>

Track discard time of excess packets in sigverify (solana-labs#22554) (…

…solana-labs#22569)

* discard time histogram

* closer to the if

* update

(cherry picked from commit e616a7e)

# Conflicts:
#	core/src/sigverify_stage.rs

Co-authored-by: anatoly yakovenko <anatoly@solana.com>