Enable shrunk memory by default and add related configurations (#4008)

- Enable shrunk memory by default and add related configurations
- Improve error messages for memory access alignment checks
- Add documentation for WAMR shrunk memory build option
- Update NuttX workflow to disable shrunk memory build option

tests/wamr-test-suites/spec-test-script/multi_module_ignore_cases.patch

@@ -1,56 +1,3 @@
-diff --git a/test/core/imports.wast b/test/core/imports.wast
-index 0cc07cb..4e8367a 100644
---- a/test/core/imports.wast
-+++ b/test/core/imports.wast
-@@ -86,7 +86,7 @@
- (assert_return (invoke "print64" (i64.const 24)))
- 
- (assert_invalid
--  (module 
-+  (module
-     (type (func (result i32)))
-     (import "test" "func" (func (type 1)))
-   )
-@@ -578,6 +578,7 @@
- (assert_return (invoke "grow" (i32.const 1)) (i32.const -1))
- (assert_return (invoke "grow" (i32.const 0)) (i32.const 2))
- 
-+(;
- (module $Mgm
-   (memory (export "memory") 1) ;; initial size is 1
-   (func (export "grow") (result i32) (memory.grow (i32.const 1)))
-@@ -586,7 +587,7 @@
- (assert_return (invoke $Mgm "grow") (i32.const 1)) ;; now size is 2
- (module $Mgim1
-   ;; imported memory limits should match, because external memory size is 2 now
--  (memory (export "memory") (import "grown-memory" "memory") 2) 
-+  (memory (export "memory") (import "grown-memory" "memory") 2)
-   (func (export "grow") (result i32) (memory.grow (i32.const 1)))
- )
- (register "grown-imported-memory" $Mgim1)
-@@ -597,7 +598,7 @@
-   (func (export "size") (result i32) (memory.size))
- )
- (assert_return (invoke $Mgim2 "size") (i32.const 3))
--
-+;)
- 
- ;; Syntax errors
- 
-@@ -669,6 +670,7 @@
-   "import after memory"
- )
- 
-+(;
- ;; This module is required to validate, regardless of whether it can be
- ;; linked. Overloading is not possible in wasm itself, but it is possible
- ;; in modules from which wasm can import.
-@@ -695,3 +697,4 @@
-   )
-   "unknown import"
- )
-+;)
-\ No newline at end of file
 diff --git a/test/core/linking.wast b/test/core/linking.wast
 index 994e0f4..8fbcc02 100644
 --- a/test/core/linking.wast