[bug] some conan tools (e.g. conan.tools.apple.is_apple_os) don't work correctly from validate/validate_build

[SSE4]

Environment Details (include every applicable attribute)

Operating System+version: macOS 12.3
Compiler+version: Apple clang version 13.1.6 (clang-1316.0.21.2.5)
Conan version: Conan version 1.51.3
Python version: Python 3.7.1

Steps to reproduce (Include if Applicable)

run simple recipe doing:

def validate_build(self):
    from conan.errors import ConanInvalidConfiguration
    from conan.tools.apple import is_apple_os
    if is_apple_os(self):
        raise ConanInvalidConfiguration("xxx")

as a result, sometimes it may raise ConanException instead of returning True/False as documented - it's not documented it can raise in any circumstances

Logs (Executed commands with output) (Include/Attach if Applicable)

	if is_apple_os(self):
	ConanException: 'self.settings' access in 'validate()' method is forbidden

[lasote]

I cannot reproduce, Would you mind sending me a recipe and the command you are running?

[SSE4]

$ cat conanfile.py 
from conan import ConanFile

class ConanFile1(ConanFile):
    name = "dummy"
    version = "1.0"
    def validate_build(self):
        from conan.tools.apple import is_apple_os
        from conan.errors import ConanInvalidConfiguration
        if is_apple_os(self):
            raise ConanInvalidConfiguration("xxx")
    def validate(self):
        from conan.tools.apple import is_apple_os
        from conan.errors import ConanInvalidConfiguration
        if is_apple_os(self):
            raise ConanInvalidConfiguration("xxx")

$ conan export . && conan install . --build=*
dummy/1.0: Exporting package recipe
dummy/1.0: Using the exported files summary hash as the recipe revision: 0ad93b2d3fb89162b6344ada30e388b3 
dummy/1.0: A new conanfile.py version was exported
dummy/1.0: Folder: /home/conan/.conan2/p/a0d1a1c1d0eeed7f/e
dummy/1.0: Exported revision: 0ad93b2d3fb89162b6344ada30e388b3
Exported recipe: dummy/1.0#0ad93b2d3fb89162b6344ada30e388b3 (2022-09-16 14:11:28 UTC)

-------- Input profiles --------
Profile host:
[settings]
arch=x86_64
build_type=Release
compiler=gcc
compiler.cppstd=gnu14
compiler.libcxx=libstdc++11
compiler.version=10
os=Linux

Profile build:
[settings]
arch=x86_64
build_type=Release
compiler=gcc
compiler.cppstd=gnu14
compiler.libcxx=libstdc++11
compiler.version=10
os=Linux


-------- Computing dependency graph --------
Graph root
    conanfile.py (dummy/1.0): /home/conan/conanfile.py

-------- Computing necessary packages --------
ERROR: conanfile.py (dummy/1.0): Error in validate() method, line 14
	if is_apple_os(self):
	ConanException: 'self.settings' access in 'validate()' method is forbidden