Add additional internal pattern combinator

Allows `semgrep-internal-patterns-allow-disjoint` to appear everywhere
(other than taint) where a `patterns` may appear. See notion for
semantics.

rule_schema_v1.yaml

@@ -217,6 +217,7 @@ $defs:
           - required: [ pattern ]
           - required: [ pattern-regex ]
           - required: [ patterns ]
+          - required: [ semgrep-internal-patterns-allow-disjoint ]
           - required: [ pattern-either ]
           - required: [ pattern-not ]
           - required: [ pattern-inside ]
@@ -228,6 +229,8 @@ $defs:
             type: string
           patterns:
             $ref: "#/$defs/patterns-content"
+          semgrep-internal-patterns-allow-disjoint:
+            $ref: "#/$defs/patterns-content"
           pattern-either:
             $ref: "#/$defs/pattern-either-content"
           pattern-not:
@@ -244,6 +247,7 @@ $defs:
     items:
       anyOf:
         - $ref: "#/$defs/patterns"
+        - $ref: "#/$defs/semgrep-internal-patterns-allow-disjoint"
         - $ref: "#/$defs/pattern-either"
         - $ref: "#/$defs/focus-metavariable"
         - $ref: "#/$defs/pattern-inside"
@@ -264,6 +268,7 @@ $defs:
     items:
       anyOf:
         - $ref: "#/$defs/patterns"
+        - $ref: "#/$defs/semgrep-internal-patterns-allow-disjoint"
         - $ref: "#/$defs/pattern-either"
         - $ref: "#/$defs/pattern-inside"
         - $ref: "#/$defs/pattern"
@@ -503,6 +508,8 @@ $defs:
             type: string
           patterns:
             $ref: "#/$defs/patterns-content"
+          semgrep-internal-patterns-allow-disjoint:
+            $ref: "#/$defs/patterns-content"
           pattern-either:
             $ref: "#/$defs/pattern-either-content"
         required:
@@ -514,6 +521,8 @@ $defs:
               anyOf:
                 - required:
                     - patterns
+                - required:
+                    - semgrep-internal-patterns-allow-disjoint
                 - required:
                     - pattern-either
                 - required:
@@ -524,6 +533,20 @@ $defs:
               anyOf:
                 - required:
                     - pattern
+                - required:
+                    - semgrep-internal-patterns-allow-disjoint
+                - required:
+                    - pattern-either
+                - required:
+                    - pattern-regex
+          - required:
+              - semgrep-internal-patterns-allow-disjoint
+            not:
+              anyOf:
+                - required:
+                    - pattern
+                - required:
+                    - patterns
                 - required:
                     - pattern-either
                 - required:
@@ -536,6 +559,8 @@ $defs:
                     - pattern
                 - required:
                     - patterns
+                - required:
+                    - semgrep-internal-patterns-allow-disjoint
                 - required:
                     - pattern-regex
           - required:
@@ -546,6 +571,8 @@ $defs:
                     - pattern
                 - required:
                     - patterns
+                - required:
+                    - semgrep-internal-patterns-allow-disjoint
                 - required:
                     - pattern-either
         additionalProperties: false
@@ -640,6 +667,18 @@ $defs:
     required:
       - patterns
     additionalProperties: false
+  # EXPERIMENTAL
+  semgrep-internal-patterns-allow-disjoint:
+    type: object
+    properties:
+      semgrep-internal-patterns-allow-disjoint:
+        title: >-
+          Return finding where all of the nested conditions are true, without
+          respect to position of subpatterns. 
+        $ref: "#/$defs/patterns-content"
+    required:
+      - semgrep-internal-patterns-allow-disjoint
+    additionalProperties: false
   pattern-either:
     type: object
     properties:
@@ -871,6 +910,8 @@ properties:
           type: string
         patterns:
           $ref: "#/$defs/patterns-content"
+        semgrep-internal-patterns-allow-disjoint:
+          $ref: "#/$defs/patterns-content"
         pattern-either:
           $ref: "#/$defs/pattern-either-content"
         # EXPERIMENTAL
@@ -1041,6 +1082,8 @@ properties:
                     - pattern
                 - required:
                     - patterns
+                - required:
+                    - semgrep-internal-patterns-allow-disjoint
                 - required:
                     - pattern-either
                 - required:
@@ -1051,6 +1094,8 @@ properties:
                     - pattern
                 - required:
                     - patterns
+                - required:
+                    - semgrep-internal-patterns-allow-disjoint
                 - required:
                     - pattern-either
                 - required: