Change IsStrict(this production) to IsStrict(this |Foo|)

... where possible, and otherwise to `IsStrict(this phrase)`.

spec.html

@@ -16883,7 +16883,7 @@ <h1>Static Semantics: Early Errors</h1>
           DecimalIntegerLiteral :: NonOctalDecimalIntegerLiteral
         </emu-grammar>
         <ul>
-          <li>It is a Syntax Error if IsStrict(this production) is *true*.</li>
+          <li>It is a Syntax Error if IsStrict(this phrase) is *true*.</li>
         </ul>
         <emu-note>In non-strict code, this syntax is Legacy.</emu-note>
       </emu-clause>
@@ -17150,7 +17150,7 @@ <h1>Static Semantics: Early Errors</h1>
             NonOctalDecimalEscapeSequence
         </emu-grammar>
         <ul>
-          <li>It is a Syntax Error if IsStrict(this production) is *true*.</li>
+          <li>It is a Syntax Error if IsStrict(this |EscapeSequence|) is *true*.</li>
         </ul>
         <emu-note>In non-strict code, this syntax is Legacy.</emu-note>
         <emu-note>
@@ -18007,7 +18007,7 @@ <h1>Static Semantics: Early Errors</h1>
       <emu-grammar>BindingIdentifier : Identifier</emu-grammar>
       <ul>
         <li>
-          It is a Syntax Error if IsStrict(this production) is *true* and the StringValue of |Identifier| is either *"arguments"* or *"eval"*.
+          It is a Syntax Error if IsStrict(this |BindingIdentifier|) is *true* and the StringValue of |Identifier| is either *"arguments"* or *"eval"*.
         </li>
       </ul>
       <emu-grammar>
@@ -18019,7 +18019,7 @@ <h1>Static Semantics: Early Errors</h1>
       </emu-grammar>
       <ul>
         <li>
-          It is a Syntax Error if IsStrict(this production) is *true*.
+          It is a Syntax Error if IsStrict(this phrase) is *true*.
         </li>
       </ul>
       <emu-grammar>
@@ -18068,7 +18068,7 @@ <h1>Static Semantics: Early Errors</h1>
       <emu-grammar>Identifier : IdentifierName but not ReservedWord</emu-grammar>
       <ul>
         <li>
-          It is a Syntax Error if IsStrict(this phrase) is *true* and the StringValue of |IdentifierName| is one of *"implements"*, *"interface"*, *"let"*, *"package"*, *"private"*, *"protected"*, *"public"*, *"static"*, or *"yield"*.
+          It is a Syntax Error if IsStrict(this |Identifier|) is *true* and the StringValue of |IdentifierName| is one of *"implements"*, *"interface"*, *"let"*, *"package"*, *"private"*, *"protected"*, *"public"*, *"static"*, or *"yield"*.
         </li>
         <li>
           It is a Syntax Error if the goal symbol of the syntactic grammar is |Module| and the StringValue of |IdentifierName| is *"await"*.
@@ -22569,7 +22569,7 @@ <h1>Static Semantics: Early Errors</h1>
       <emu-grammar>WithStatement : `with` `(` Expression `)` Statement</emu-grammar>
       <ul>
         <li>
-          It is a Syntax Error if IsStrict(this production) is *true*.
+          It is a Syntax Error if IsStrict(this |WithStatement|) is *true*.
         </li>
         <li>
           It is a Syntax Error if IsLabelledFunction(|Statement|) is *true*.
@@ -50507,7 +50507,7 @@ <h1>Changes to Block Static Semantics: Early Errors</h1>
         <emu-grammar>Block : `{` StatementList `}`</emu-grammar>
         <ul>
           <li>
-            It is a Syntax Error if the LexicallyDeclaredNames of |StatementList| contains any duplicate entries<ins>, unless IsStrict(this production) is *false* and the duplicate entries are only bound by FunctionDeclarations</ins>.
+            It is a Syntax Error if the LexicallyDeclaredNames of |StatementList| contains any duplicate entries<ins>, unless IsStrict(this |Block|) is *false* and the duplicate entries are only bound by FunctionDeclarations</ins>.
           </li>
           <li>
             It is a Syntax Error if any element of the LexicallyDeclaredNames of |StatementList| also occurs in the VarDeclaredNames of |StatementList|.
@@ -50521,7 +50521,7 @@ <h1>Changes to `switch` Statement Static Semantics: Early Errors</h1>
         <emu-grammar>SwitchStatement : `switch` `(` Expression `)` CaseBlock</emu-grammar>
         <ul>
           <li>
-            It is a Syntax Error if the LexicallyDeclaredNames of |CaseBlock| contains any duplicate entries<ins>, unless IsStrict(this production) is *false* and the duplicate entries are only bound by FunctionDeclarations</ins>.
+            It is a Syntax Error if the LexicallyDeclaredNames of |CaseBlock| contains any duplicate entries<ins>, unless IsStrict(this |SwitchStatement|) is *false* and the duplicate entries are only bound by FunctionDeclarations</ins>.
           </li>
           <li>
             It is a Syntax Error if any element of the LexicallyDeclaredNames of |CaseBlock| also occurs in the VarDeclaredNames of |CaseBlock|.